Implemented csv2yaml convertor

[moskvin]

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Added

• csv2yaml convertor

[netbe]

@moskvin thanks for the contribution,

Please add some unit tests and have you look at the @houndci-bot comments.

• Also did you look athttps://github.com/netbe/Babelish/tree/feature/yaml?
• Also would be cool to have yaml2csv?

[moskvin]

Also did you look athttps://github.com/netbe/Babelish/tree/feature/yaml?

no, I was surprised :)

[moskvin]

Also would be cool to have yaml2csv?

not required right now for me, but I think we should add it

[moskvin]

@netbe If you want to achieve clean code for the project I suggest use rubocop