add documentation for crowdin gitlab integration
Contributor checklist
-
My contribution is ready to be merged as is -
I verified the modifications render properly -
I used spell checking -
I used the styling and structure aids available in Sphinx/ResT. (Links use _, enumerations#., lists*, code…/.. code::, warnings ..warning::, etc.) -
I reread the text keeping in mind that the text has to be comprehended fully by the target audience