Publish on brew

[lmammino]

Allow pre-compiled binaries to be installed directly from brew:

e.g.

brew install lmammino/repo/jwtinfo

Guides:

• https://docs.brew.sh/How-to-Create-and-Maintain-a-Tap
• https://docs.brew.sh/Taps
• https://docs.brew.sh/Bottles (precompiled binaries)