feat: Install Jan AI using the Homebrew package

[lgrardin]

Hello Jan AI Developers,

I hope this message finds you well. I wanted to reach out to express my appreciation for the work you've put into developing Jan AI. It's a fantastic tool that has proven to be invaluable.

I have a quick question regarding the installation process. Is there a way to install Jan AI using the Homebrew package manager with a command like "brew install --cask"?

Thanks !

[Van-QA]

Linking to this PR: Homebrew/homebrew-cask#168215, thanks to @chenrui333
https://formulae.brew.sh/cask/jan#default

[Van-QA]

Currently, our homebrew only supports Mac Silicon ✅, we need:

1. Brew should support multiple architectures:

cask "visual-studio-code-insiders" do
  cpu :intel do
    version "1.53.0,6dc779565e1e4a26104002fde340b68c157c3bc5"
    sha256 "ea08cd72f7501223d1c888b300bd961df27e80558e4e51c868740f651f3912ce"
    ""
  end

  cpu :arm do
    version "1.53.0,e17aea136d32fdb06d9b32184b04ccd36bb51e9c"
    sha256 "3f9bdb6867636cc9116d96a09aef53a927e1636609df33bfe23a1275107a04b6"
    "-arm64"
  end

  cpu # Need to call `cpu` method to initialize `version`

  url "https://az764295.vo.msecnd.net/insider/#{version.after_comma}/VSCode-darwin#{cpu}.zip",
      verified: "az764295.vo.msecnd.net/insider/"
  # ...
end

2. Cleanup the uninstallation steps, @louis-jan

[lgrardin]

Thank you very much, it's great! See you soon.