ci: add workflow for testing formulae

[shamilsan]

• Add a CI workflow to test formulae.

Note: Now in fails on Linux due to #4

[clearloop]

lgtm!

• since we have checksum, do we really need version checks?
• should we support linux version of brew?
• scheduled or not?

[clearloop]

I'm worrying about once we have tons of versions of gear, just figured out a trick doing these,

brew tap-info gear-tech/gear --json
[
  {
    "name": "gear-tech/gear",
    "user": "gear-tech",
    "repo": "gear",
    "path": "/opt/homebrew/Library/Taps/gear-tech/homebrew-gear",
    "installed": true,
    "official": false,
    "formula_names": [
      "gear-tech/gear/[email protected]",
      "gear-tech/gear/[email protected]",
      "gear-tech/gear/[email protected]",
      "gear-tech/gear/vara@stable",
      "gear-tech/gear/getgear",
      "gear-tech/gear/[email protected]",
      "gear-tech/gear/[email protected]",
      "gear-tech/gear/gear",
      "gear-tech/gear/vara",
      "gear-tech/gear/[email protected]",
      "gear-tech/gear/gear@nightly",
      "gear-tech/gear/[email protected]",
      "gear-tech/gear/[email protected]"
    ],
    "formula_files": [
      "/opt/homebrew/Library/Taps/gear-tech/homebrew-gear/Formula/[email protected]",
      "/opt/homebrew/Library/Taps/gear-tech/homebrew-gear/Formula/[email protected]",
      "/opt/homebrew/Library/Taps/gear-tech/homebrew-gear/Formula/[email protected]",
      "/opt/homebrew/Library/Taps/gear-tech/homebrew-gear/Formula/[email protected]",
      "/opt/homebrew/Library/Taps/gear-tech/homebrew-gear/Formula/getgear.rb",
      "/opt/homebrew/Library/Taps/gear-tech/homebrew-gear/Formula/[email protected]",
      "/opt/homebrew/Library/Taps/gear-tech/homebrew-gear/Formula/[email protected]",
      "/opt/homebrew/Library/Taps/gear-tech/homebrew-gear/Formula/gear.rb",
      "/opt/homebrew/Library/Taps/gear-tech/homebrew-gear/Formula/vara.rb",
      "/opt/homebrew/Library/Taps/gear-tech/homebrew-gear/Formula/[email protected]",
      "/opt/homebrew/Library/Taps/gear-tech/homebrew-gear/Formula/[email protected]",
      "/opt/homebrew/Library/Taps/gear-tech/homebrew-gear/Formula/[email protected]",
      "/opt/homebrew/Library/Taps/gear-tech/homebrew-gear/Formula/[email protected]"
    ],
    "cask_tokens": [

    ],
    "cask_files": [

    ],
    "command_files": [
      "/opt/homebrew/Library/Taps/gear-tech/homebrew-gear/cmd/glinks.rb"
    ],
    "remote": "[email protected]:gear-tech/homebrew-gear.git",
    "custom_remote": -1,
    "private": true
  }
]

we can get all of the formulas from brew tap-info gear-tech/gear --json with json format, then, with some scripts mb jq, we get all of the versions and testing the downloading

[shamilsan]

I'm worrying about once we have tons of versions of gear, just figured out a trick doing these,

I think we are to abandon supporting the old versions (even maybe with the formulae removing). Using the matrix allows running checks in parallel.