* Add rest api endpoint to delete documents by filter.
* Remove parametrization of rest api tests
* Make the paths in rest_api/config.py absolute
* Fix path to pipelines.yaml
* Restructuring test_rest_api.py to be able to test only my endpoint (and to make the suite more structured)
* Convert DELETE /documents into POST /documents/delete_by_filters
Co-authored by: sarthakj2109 <54064348+sarthakj2109@users.noreply.github.com>