Add a parser for Gustl

[nanu-c]

Type of change

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] This change requires a documentation update

Description

IMPORTANT TO KNOW

CHANGES

Builds on upon the fix for inverted images and creates a separate article for gustl. TODO

Checklist:

• [x] I have commented my code (or ChatGPT did), particularly in hard-to-understand areas
• [ ] I have made corresponding changes to the documentation
• [ ] My changes generate no new warnings, neither in my IDE nor in my browser
• [ ] I have added tests that prove my fix is effective or that my feature works

[lebe1]

Right now I receive an error which is thrown in these two lines

 File "/home/funny/Documents/Projects/Augustin-Parser/augustin-plugin/main.py", line 60, in upload
    papers_category_id = check_for_papers_category(version_number)
                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/funny/Documents/Projects/Augustin-Parser/augustin-plugin/utils/requests.py", line 153, in check_for_papers_category
    category_list = json.loads(response.content)
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^

saying json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0) , which I assume is the missing bracket since I printed out the response.content as shown in the recent commit, which starts with <!DOCTYPE...

Behaviour happened due to missing WP setup after a docker compose down -v