Consider use other CI for parallelism

[tigercosmos]

Currently, we already reached the GitHub action parallelism limit.
Consider adding other CI services to achieve better parallelism to speed up the CI process.

Circle CI looks good to me, as they seem friendly to the OSS project.
https://circleci.com/open-source/

[yungyuc]

Before looking into other CI services, we should refactor our CI script. It is taking excessive resources (and time).

cc @terrychan999

[tigercosmos]

@yungyuc what's kind of the refactoring?

[yungyuc]

Work that makes CI run faster.