Add maiyamok

[wannaphong]

What does this changes

MaiYaMok (ๆ) is the mark of duplicate word in Thai language. This function is preprocessing MaiYaMok in Thai sentence.

from pythainlp.util import maiyamok

maiyamok("เด็กๆชอบไปโรงเรียน")
# output: ['เด็ก', 'เด็ก', 'ชอบ', 'ไป', 'โรงเรียน']

maiyamok(["ทำไม","คน","ดี"," ","ๆ","ๆ"," ","ถึง","ทำ","ไม่ได้"])
# output: ['ทำไม', 'คน', 'ดี', 'ดี', 'ดี', ' ', 'ถึง', 'ทำ', 'ไม่ได้']

original code from https://web.facebook.com/groups/thainlp/posts/663608874020606/

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[pep8speaks]

Hello @wannaphong! Thanks for updating this PR. We checked the lines you've touched for PEP 8 issues, and found:

There are currently no PEP 8 issues detected in this Pull Request. Cheers! 🍻

Comment last updated at 2021-10-31 11:00:52 UTC

[wannaphong]

original code from https://web.facebook.com/groups/thainlp/posts/663608874020606/

[coveralls]

Coverage increased (+0.08%) to 97.756% when pulling ead5b8b on add-clean-maiyamok into 6135ba5 on dev.

[bact]

So we stick with the name maiyamok()?

[wannaphong]

maiyamok

I think that this name is clear. from https://en.wiktionary.org/wiki/%E0%B9%86, It's "THAI CHARACTER MAIYAMOK". or Should change it to clean_maiyamok?