fix: add Supabase configuration and initial database setup

Introduces Supabase configuration specifying project settings and an initial database migration

supabase/.gitignore

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+# Supabase
+.branches
+.temp

supabase/README.md

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+# Supabase Database Adapter
+
+[Supabase](https://supabase.com/) is used to store contributor profiles and task information.
+
+### How to set up supabase project locally
+
+1. To get started with supabase, you have to create a project at [Supabase](https://supabase.com/).
+   Once you create a project, please put both variables into `.env` file.
+
+```
+SUPABASE_URL=XXX
+SUPABASE_KEY=XXX
+```
+
+2.  [The Supabase CLI](https://supabase.com/docs/guides/resources/supabase-cli) available as a node package through the dev dependencies provides tools to develop your project locally and deploy to the Supabase Platform.
+    Most common useful commands are
+
+- Run Supabase locally
+
+```sh
+bun supabase start
+```
+
+- Manager database migrations
+
+```sh
+bun supabase migration
+```
+
+- CI/CD for releasing to production
+
+```sh
+bun supabase db push
+```
+
+- Manager your supabase projects
+
+```sh
+bun supabase projects
+```
+
+- Generate types directly from your database schemas
+
+```sh
+bun supabase gen types
+```
+
+3. Link the local project to the supabase project you created.
+
+```sh
+bun supabase link -p PASSWORD --project-ref PROJECT_REF
+```
+
+For more information about arguments, please go through [here](https://supabase.com/docs/reference/cli/supabase-link)
+
+### Database Operation
+
+- `supabase migration new MIGRATION_NAME`: It will create a migration file in supabase/migrations folder.
+- `supabase migration repair <MIGRATION_NAME> --status reverted`: Revert a given migration file.
+- `supabase db push`: Update database schema on supabase platform
+- `supabase gen types typescript > src/adapters/supabase/types/database.ts --linked`: Generate typescript types from the supabase project linked

supabase/config.toml

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+# A string used to distinguish different Supabase projects on the same host. Defaults to the
+# working directory name when running `supabase init`.
+project_id = "ubiquity-os-kernel"
+
+[api]
+enabled = true
+# Port to use for the API URL.
+port = 54321
+# Schemas to expose in your API. Tables, views and stored procedures in this schema will get API
+# endpoints. public and storage are always included.
+schemas = ["public", "storage", "graphql_public"]
+# Extra schemas to add to the search_path of every request. public is always included.
+extra_search_path = ["public", "extensions"]
+# The maximum number of rows returns from a view, table, or stored procedure. Limits payload size
+# for accidental or malicious requests.
+max_rows = 1000
+
+[db]
+# Port to use for the local database URL.
+port = 54322
+# Port used by db diff command to initialise the shadow database.
+shadow_port = 54320
+# The database major version to use. This has to be the same as your remote database's. Run `SHOW
+# server_version;` on the remote database to check.
+major_version = 15
+
+[db.pooler]
+enabled = false
+# Port to use for the local connection pooler.
+port = 54329
+# Specifies when a server connection can be reused by other clients.
+# Configure one of the supported pooler modes: `transaction`, `session`.
+pool_mode = "transaction"
+# How many server connections to allow per user/database pair.
+default_pool_size = 20
+# Maximum number of client connections allowed.
+max_client_conn = 100
+
+[realtime]
+enabled = true
+# Bind realtime via either IPv4 or IPv6. (default: IPv6)
+# ip_version = "IPv6"
+
+[studio]
+enabled = true
+# Port to use for Supabase Studio.
+port = 54323
+# External URL of the API server that frontend connects to.
+api_url = "http://localhost"
+
+# Email testing server. Emails sent with the local dev setup are not actually sent - rather, they
+# are monitored, and you can view the emails that would have been sent from the web interface.
+[inbucket]
+enabled = true
+# Port to use for the email testing server web interface.
+port = 54324
+# Uncomment to expose additional ports for testing user applications that send emails.
+# smtp_port = 54325
+# pop3_port = 54326
+
+[storage]
+enabled = true
+# The maximum file size allowed (e.g. "5MB", "500KB").
+file_size_limit = "50MiB"
+
+[auth]
+enabled = true
+# The base URL of your website. Used as an allow-list for redirects and for constructing URLs used
+# in emails.
+site_url = "http://localhost:3000"
+# A list of *exact* URLs that auth providers are permitted to redirect to post authentication.
+additional_redirect_urls = ["https://localhost:3000"]
+# How long tokens are valid for, in seconds. Defaults to 3600 (1 hour), maximum 604,800 (1 week).
+jwt_expiry = 3600
+# If disabled, the refresh token will never expire.
+enable_refresh_token_rotation = true
+# Allows refresh tokens to be reused after expiry, up to the specified interval in seconds.
+# Requires enable_refresh_token_rotation = true.
+refresh_token_reuse_interval = 10
+# Allow/disallow new user signups to your project.
+enable_signup = true
+
+[auth.email]
+# Allow/disallow new user signups via email to your project.
+enable_signup = true
+# If enabled, a user will be required to confirm any email change on both the old, and new email
+# addresses. If disabled, only the new email is required to confirm.
+double_confirm_changes = true
+# If enabled, users need to confirm their email address before signing in.
+enable_confirmations = false
+
+# Uncomment to customize email template
+# [auth.email.template.invite]
+# subject = "You have been invited"
+# content_path = "./supabase/templates/invite.html"
+
+[auth.sms]
+# Allow/disallow new user signups via SMS to your project.
+enable_signup = true
+# If enabled, users need to confirm their phone number before signing in.
+enable_confirmations = false
+
+# Use pre-defined map of phone number to OTP for testing.
+[auth.sms.test_otp]
+# 4152127777 = "123456"
+
+# Configure one of the supported SMS providers: `twilio`, `twilio_verify`, `messagebird`, `textlocal`, `vonage`.
+[auth.sms.twilio]
+enabled = false
+account_sid = ""
+message_service_sid = ""
+# DO NOT commit your Twilio auth token to git. Use environment variable substitution instead:
+auth_token = "env(SUPABASE_AUTH_SMS_TWILIO_AUTH_TOKEN)"
+
+# Use an external OAuth provider. The full list of providers are: `apple`, `azure`, `bitbucket`,
+# `discord`, `facebook`, `github`, `gitlab`, `google`, `keycloak`, `linkedin`, `notion`, `twitch`,
+# `twitter`, `slack`, `spotify`, `workos`, `zoom`.
+[auth.external.apple]
+enabled = false
+client_id = ""
+# DO NOT commit your OAuth provider secret to git. Use environment variable substitution instead:
+secret = "env(SUPABASE_AUTH_EXTERNAL_APPLE_SECRET)"
+# Overrides the default auth redirectUrl.
+redirect_uri = ""
+# Overrides the default auth provider URL. Used to support self-hosted gitlab, single-tenant Azure,
+# or any other third-party OIDC providers.
+url = ""
+
+[analytics]
+enabled = false
+port = 54327
+vector_port = 54328
+# Configure one of the supported backends: `postgres`, `bigquery`.
+backend = "postgres"

supabase/functions/.vscode/extensions.json

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+{
+  "recommendations": ["denoland.vscode-deno"]
+}

supabase/functions/.vscode/settings.json

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+{
+  "deno.enable": true,
+  "deno.lint": true,
+  "editor.defaultFormatter": "denoland.vscode-deno",
+  "jest.jestCommandLine": "npx jest"
+}