[ci] Setup CI

[ethanuppal]

We should have a GitHub action that runs make test on each commit and pull request to main.

[ethanuppal]

It is also a good idea to have continuous benchmark regression testing.

[ethanuppal]

@Yey007 is this already done?

[utkudotdev]

No it's half-done lol, test and bench run but bench doesn't actually check for regressions

[utkudotdev]

TODO

• Bench that checks for regressions
• Format linting
• Do we fail CI on compiler warnings? There are some warnings in the build rn that can easily be avoided
• Eliminate docs branch if possible