CI refactor

[augustozanellato]

Changes made:

• CI properly supports being ran on PRs and shouldn't fail anymore on the RRG repo;
• The nonsense of unzipping archives during release creation isn't needed anymore because now there's an artifact that holds all the files (both zip and others) that should be included in a release;
• Softdevice and Application verification were re-enabled (as per @doegox suggestion);
• Softdevice is now bundled in -firmware artifact;
• dev release tag is now updated ad every push to main;
• On PRs a comment linking to artifact is now added by CI after success, artifact links are done with nightly.link so that they also fork for unauthenticated users;

There are some quirks:

• on_pr runs on pull_request_target because it needs write access to packages, but pull_request_target implies that GITHUB_SHA is set to the base repo HEAD commit, so the whole checkout-sha thing is needed. This also implies that if one of the workflow files are changed in a PR the changed versions won't be ran against that same PR.
• Client building per OS isn't yet implemented but all the necessary scaffolding is there. At the moment the per-OS clients are just a zip file containing all the client source.

Examples:

• PR comment: https://github.com/augustozanellato/ChameleonUltra/pull/14#issuecomment-1688737709
• dev release: https://github.com/augustozanellato/ChameleonUltra/releases/tag/dev

[github-actions[bot]]

You are welcome to add an entry to the CHANGELOG.md as well

[doegox]

no need to cheat, nobody is putting pressure on you :D

[doegox]

thanks !