WIP Default disable learn function

[juhoinkinen]

The learn functionality is rarely used, so it is best to be disabled by default for API requests.

This pull request introduces a new feature that restricts learning operations on projects unless explicitly enabled with allow_learn project config parameter.

Adds a new 403 response in the OpenAPI specification for trying to access the /v1/<project>/learn when the project is not configured to allow this.

[codecov[bot]]

Codecov Report

:white_check_mark: All modified and coverable lines are covered by tests. :white_check_mark: Project coverage is 99.64%. Comparing base (38f5e8a) to head (39d2a8c). :warning: Report is 21 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #843      +/-   ##
==========================================
+ Coverage   99.63%   99.64%   +0.01%     
==========================================
  Files          99       99              
  Lines        7350     7361      +11     
==========================================
+ Hits         7323     7335      +12     
+ Misses         27       26       -1     

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[osma]

The existing visibility settings only affect the REST API. I think this could also be scoped the same way; the CLI probably shouldn't care about this setting.

[sonarqubecloud[bot]]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[sonarqubecloud[bot]]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud