feat: Add more granular permissions based on tags

[novakzaballa]

Thanks for submitting a PR! Please check the boxes below:

• [x] I have run pre-commit to check linting
• [ ] I have added information to docs/ if required so people know about the feature!
• [x] I have filled in the "Changes" section below?
• [x] I have filled in the "How did you test this code" section below?
• [x] I have used a Conventional Commit title for this Pull Request

Changes

Based on the issue: https://github.com/Flagsmith/flagsmith/issues/1535

• Tags can now be added to roles to enhance granularity in permissions.

How did you test this code?

To properly test the functionality, this issue must be resolved first.

• Go to the "users and permissions" tab
• Click the "roles" tab
• Select the project where you have the tags you want to manage.
• Select the tags, and click save/update button