Yadhap/user roles

[ydahal1]

Description

Added necessary models and migrations for user , user_role, role_types. Added seeder file to seed pre-defined user roles. Added some columns in user_application table to establish relationship between an application and user

Type of change

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

Developer Checklist:

• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have resolved any conflicts with the branch I am attempting to merge to.
• [x] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings
• [x] I have added tests that prove my fix is effective or that my feature works
• [x] New and existing unit tests pass locally with my changes
• [x] Any dependent changes have been merged and published in downstream modules
• [x] I have checked my code and corrected any misspellings
• [x] I have ensured that my code does not unecessarily duplicate existing cod
• [x] I have ensured that all security checks have been passed
• [x] All input boxes have sensible character limits applied
• [x] Refreshing related pages puts page in a workable and sensible state

Reviewer Checklist

• [ ] I have pulled the branch into my local environemtn and started the project succesfully
• [ ] I have reviewed the code for proper comments and mispellings
• [ ] All input boxes have sensible character limits applied
• [ ] Refreshing related pages puts page in a workable and sensible state
• [ ] Submitting any relevant Forms relays proper messaging to user
• [ ] I have checked that all security checks have been passed
• [ ] I have checked that all backend routes have proper validation

[ydahal1]

In this PR I have

Added necessary models and migrations for user, user_role, and role types. Added the seeder file to seed pre-defined user roles. Added some columns in user_application table to establish the relationship between an application and a user