Add option to remove trailing spaces

[Zadkiel AHARONIAN]

As done in https://yamllint.readthedocs.io/en/stable/rules.html#module-yamllint.rules.trailing_spaces

[Braydon Kains]

Thanks for opening an issue!

yamlfmt seems to do this by default on Linux. Do you have a reproduction where it doesn't work?

I tried:

a: 1 
b: test 

With a trailing space on both. After formatting, the trailing space was gone.

[Zadkiel AHARONIAN]

You're right, thank you for your time!