Add some costomized format check

[andy840119]

For all MD:

• Should be UTF-8 and Space should be 4.

For the changelog:

• Folder name should be yyyy.mmdd
• content name should be index.md
• Should fill the metadata, and the title should be. Title, date and folder name should be matched.

  title: "yyyy.mmdd"
  date: yyyy-mm-dd
  

• All changelog title should be with h2
• Customized link should be with target format. (e.g. [karaoke](#2154@andy840119)).
  • If not follow the format, should be the relative link or absolute url
• Relative link or absolute link should not be 404
• Customized tag should be with target wording. (e.g. [Close duplicated])
• (Optional) spell or grammar check.

[andy840119]

Guess should be OK to add some code in the project?
But the code should be cross-platform and might be able to trigger before commit, and should be available trigger in the CI.