🏷️ Add list tags API

[Palwisha-18]

Description

• Added Tags List API
  URL: GET api/v1/events/tags/
  Description: Allows authenticated users to fetch all tags.
  Response (Success):
  Status: 200 OK

       [
            {
                "id": 1,
                "name": "backend-training"
            },
            {
                "id": 2,
                "name": "frontend-training"
            }
     ]

Link to the associated Taiga ticket: https://projects.arbisoft.com/project/arbisoft-sessions-portal-20/us/27