Move big string resources folder

[marianelamin]

let's move all this big string to files with resources.
you could have a CSV which can be load as fixture in the conftests. Or a JSON. Or anything that will be simple enough to maintain and that helps you to remove clutter out of the code.

Originally posted by @Edilmo in #68 (comment)

Proposed Solution

1. Create a json file containing large texts that will be used to test different scrapers, ie test_scraper_constants.json

   {
       "el-pitazo": {
             "get-body-parse-ok": "super long text"
       }
   }

2. Create a conftest.py with the following contents

    import pytest
   
    @pytest.fixture
    def get_body_for_parse_ok():
        filename = "../../resources/tests/scraper/test_scraper_constants.json" # should be relative to repo's root
        text_of_interest = _get_json_from_file['el-pitazo']['get-body-parse-ok']
        return text_of_interest

3. Use the fixture on the test file, ie: test_some_name.py

   def test_parse_ok(get_body_for_parse_ok):

conftest.py can be placed inside the folder where all tests needing to access such long text live.