Setup GitHub Actions for Tests

[zainfathoni]

Overview

To incorporate #178 & #185 in our Pull Request checks, we need a new .github/workflows/test.yml file to configure GitHub Actions on each branch push.

Current Tasks

Run all these tasks in parallel, since they're not dependent each other.

• [x] #182
• [x] #192
• [x] #195
• [x] Integrate with CodeCov to monitor and maintain the code coverage

[mazipan]

Add codecov also dong @zainfathoni to monitor the coverage