[Do not Merge] Add CI/CD Milestones

[eitanturok]

To setup CI/CD for MegaBlocks

• testing Migrate tests to pytest + add GA #127
• fix setup.py Clean up setup.py #128
• Format + lint GA to Lint + Format MegaBlocks #131
• Type checking
• Cut new release of stk, grouped_gemm
• streamline tests
• [ ]