Add a CI workflow for build and test

[arisu6804]

Summary

Add a CI workflow for build and test.

Context

Tracking issue for the StreamPay smart contract. Open to contributors.

Acceptance criteria

• Implement the change described above
• Add or update automated tests
• Update the relevant documentation

[Oluwasuyi-Oluwatimilehin-Daniel]

Hello maintainers I'm a full stack developer experience in building scalable systems I can handle this perfectly if assigned