Fix #228, add to the CI pipeline a verification that all python scripts are formatted (now it's ready)

When !923 (merged), !924 (merged) and !925 (merged) are merged this MR will pass the tests. It adds the check to the pipeline that all python scripts are properly formatted with scripts/python-formatter.sh ./.

This way we will no longer have mess in python, just like clang formatter works for us in C++.

EDIT: the pipeline will pass now and test the formatting of python scripts.