chore: fix knip warnings in kernel repository

[gitcoindev]

• Set correct entry points in knip.ts for ubiquibot-kernel repostiory to find all dependencies
• add unlisted transitive dependencies to package.json that were imported directly

Resolves: #34

[github-actions]

Unused dependencies (4)

Filename	dependencies
package.json	@octokit/webhooks-types create-cloudflare octokit universal-github-app-jwt

Unused devDependencies (4)

Filename	devDependencies
package.json	@mswjs/data esbuild eslint-config-prettier eslint-plugin-prettier

Unlisted dependencies (9)

Filename	unlisted
src/github/github-client.ts	@octokit/core @octokit/types @octokit/plugin-paginate-rest @octokit/plugin-rest-endpoint-methods @octokit/plugin-retry @octokit/plugin-throttling @octokit/auth-app
src/github/github-event-handler.ts	@octokit/auth-app
src/github/utils/config.ts	yaml

Unlisted binaries (5)

Filename	binaries
package.json	lsof awk
.github/workflows/build.yml	build
.github/workflows/bun-testing.yml	i
.github/workflows/cspell.yml	format:cspell

[gitcoindev]

After merging all Knip warnings will be gone.

QA: https://github.com/gitcoindev/ubiquibot-kernel/actions/runs/8330594286/job/22795604012?pr=3

Also tested locally:

$ bun knip
$ knip --config .github/knip.ts
✂️  Excellent, Knip found no issues.