Feature: add datetime to rules context

[Guts]

This PR adds date information to rules context allowing to condition a profile deployment based on current year, month or day.

In the following example, the profile is installed only if QDT runs on a Linux operating system and if the current year >= 2023:

{
  "$schema": "https://raw.githubusercontent.com/Guts/qgis-deployment-cli/main/docs/schemas/profile/qgis_profile.json",
  "name": "QDT Only Linux",
  "folder_name": "qdt_only_linux",
  "description": "Demonstrating a QDT profile that's deployed only on Linux.",
  "author": "Julien Moura",
  "email": "infos+qdt@oslandia.com",
  "qgisMinimumVersion": "3.34.0",
  "qgisMaximumVersion": "3.99.10",
  "version": "1.0.0",
  "rules": [
    {
      "name": "Environment",
      "description": "Profile is configured to run only on Linux.",
      "conditions": {
        "all": [
          {
            "path": "$.environment.operating_system_code",
            "value": "linux",
            "operator": "equal"
          },
          {
            "path": "$.date.current_year",
            "value": 2023,
            "operator": "greater_than_inclusive"
          }
        ]
      }
    }
  ]
}

Depends on #481

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 68.10%. Comparing base (1d2b672) to head (0f6f639).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #484      +/-   ##
==========================================
- Coverage   70.81%   68.10%   -2.71%     
==========================================
  Files          47       47              
  Lines        2906     2910       +4     
  Branches      631      631              
==========================================
- Hits         2058     1982      -76     
- Misses        668      747      +79     
- Partials      180      181       +1     

Flag	Coverage Δ
unittests	67.83% <100.00%> (-2.44%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
...loyment_toolbelt/jobs/job_profiles_synchronizer.py	50.79% <100.00%> (ø)
..._deployment_toolbelt/utils/computer_environment.py	100.00% <100.00%> (ø)

... and 5 files with indirect coverage changes

[sonarqubecloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud