[FEATURE] Do Scala Style via CI workflow by GitHub Actions

[nlu90]

Is your feature request related to a problem? Please describe.
PRs are not verified with scala style requirement which causes failure until release.

Describe the solution you'd like
Add a CI workflow to do scala style check

Describe alternatives you've considered
No

Additional context
No

[tisonkun]

I'm going to investigate if the current ./mvnw clean verify already cover this requirement or we need an extra step.