[Feature Request] GitHub action for cross-platform compiling

[Pablo Martínez]

Description

Tauri doesnt support cross-compiling (yet) Thus, they provide GitHub actions to get the compilations done, info on their docs, im not making a PR for two reasons:

• I have no idea how Actions work/are setup
• I've manually compiled on Windows and while i could install the output file, the .exe didn't even open afterwards. So we really should get things configured/tested before getting auto-compilations going into non-working code.