Add Homebrew Cask for Cinny

[Neved4]

Description

Adds a Cask formula to install Cinny using the Homebrew package manager.

Finally fixes https://github.com/cinnyapp/cinny-desktop/issues/62

After this PR, Cinny can be installed with:

brew tap cinnyapp/cinny-desktop https://github.com/cinnyapp/cinny-desktop
brew install cinny

The Cask formula could be moved into its own separate homebrew-tap repo under the Cinny project. See https://github.com/cinnyapp/cinny-desktop/issues/62#issuecomment-2250129047

Type of change

• [x] Bug fix (non-breaking change which fixes an issue)
• [x] This change requires a documentation update

Checklist:

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my own code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings

[github-actions[bot]]

All contributors have signed the CLA ✍️ ✅
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[Neved4]

I have read the CLA Document and I hereby sign the CLA

[Neved4]

Note that the public_repo and workflow scopes are required in the custom access token ${{secrets.TOKEN}}

Also, moving the Casks/ into a separate homebrew-tap repo within Cinny's org will make installs simpler:

brew install cinnyapp/tap/cinny

[Neved4]

@kfiven had this running in my own private tap for a while now

So far delivering the last few upgrades with no issues: Neved4/tap/cinny_v4.2.0

Let me know if further help is needed