Macos notarization

Add Code Signing and Notarization for Nheko.app and Nheko.dmg during CI/CD.

approved this merge request

added 13 commits

• 52b8a073...764bd203 - 12 commits from branch master
• b678595d - Macos nightly code-signing and notarization

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added 1 commit

• fa81afc6 - Only run notarization and signing on master and tags

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added 1 commit

• 1c1975dc - Only run notarization and signing on master and tags

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enabled an automatic merge when the pipeline for 1c1975dc succeeds

mentioned in commit eaa39ac2

merged