Setup:
- Start PostreSQL server, add credentials and connection information into URLtagsCounter\settings.py
- run "python manage.py migrate" to apply migrations
- run "python manage.py runserver" to start debug server
Endpoints:
- "/add" adds new URL and starts counting process. Returns url_id
- "/get/int:url_id" returns counting result or message if counting isn't finished
- "/update/int:url_id" repeats counting process for URL. Returns url_id