[Subtask]: Meet all requirements of the Apache Project Maturity Model

[zhoujinsong]

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Description

Assess the project's maturity status to ensure full compliance with all requirements of the Apache Project Maturity Model.

Parent issue

#3827

Are you willing to submit PR?

• Yes I am willing to submit a PR!

Code of Conduct

• I agree to follow this project's Code of Conduct

[justinmclean]

Just a note you you don't need to meet all requirements. This may help - https://cwiki.apache.org/confluence/display/INCUBATOR/How+to+Use+the+ASF+Maturity+Model

[zhoujinsong]

I have drafted a self-assessment Apache Amoro Maturity Model document.

Everyone is welcome to review it!