[Feature Request] Add codebase Coverage report

[jiangying000]

🚀 Feature Request

Might be good to have a coverage report and add a badge to https://github.com/move-language/move/blob/main/README.md

Motivation

show current codebase test coverage status and QA on PRs

Pitch

Describe the solution you'd like

// Describe alternatives you've considered

// Are you willing to open a pull request? (See CONTRIBUTING) //

Additional context