Add a GitHub Action to generate Linux formulae and analytics data (#16214)
Add a GitHub Action to generate Linux formulae and analytics data (#16214)

TODO (both done):
1. Credentials entered into the Actions UI for these tasks (that is, an
   SSH key and Google Analytics keys).
2. Switch formulae.brew.sh to `Homebrew/formulae.brew.sh` and the master
   branch.
LinuxbrewTestBot/homebrew-core,maxim-belkin/homebrew-core,rwhogg/homebrew-core,maxim-belkin/homebrew-core,Linuxbrew/homebrew-core,Linuxbrew/homebrew-core,LinuxbrewTestBot/homebrew-core,rwhogg/homebrew-core