feat(git): support github app authentication

[Djiit]

Quick attempt to add support for Github App authentication against Github API. Useful for enterprise use case where a PAT is not a recommended/available option per local policies.

[cteyton]

Thanks @Djiit for the contribution.
We're gonna test it internally very soon :-)

[cteyton]

Ideally, would you prefer this approach or would you prefer to install an app from the GH Marketplace?
https://github.com/marketplace?type=apps

[Djiit]

Sorry I missed the notification. We'd prefer to have full control, but I recognize some leaner organization would benefit from a ready-to-use one. Good call.

[cteyton]

Thanks @Djiit for the clarification.
In addition to the "Push" experience (let Packmind commit on your git repos), we're currently releasing a "Pull" experience, allowing each project to retrieve the standards and recipes on its own. In this context, Packmind becomes a registry (like NPM, but for Agent artefacts), and users can download them.
Would this scenario be more convenient in your context?
Thanks :)

[Djiit]

That would work too, yes. Uses could pull or we could setup a regular pull on GitHub actions.

[sonarqubecloud]

Quality Gate passed

Issues
8 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

[cteyton]

Thanks @Djiit for your record.
We'll keep you in touch when a "pull" experience will be available in the next few days.
Your contribution is precious, but we'll have to rework the UI system and the Database schemas as well to fully integrate it.
Thanks for boostrapping that.
I've created issue #4 to track its progress.