feat: added Get /requests endpoint for getting all requests

[tars919]

Description

Added GET /requests endpoint to retrieve all requests

Type of Change

• Bug fix (non-breaking change that fixes an issue)
• [x ] New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Refactoring (code improvement without changing functionality)
• Documentation update
• Configuration/infrastructure change
• Performance improvement
• [x ] Test coverage improvement

Related Issue(s)

Closes #
Related to #

What Changed?

• Added GetAllRequests method to RequestsRepository
• Added GetAllRequests handler
• Added GetAllRequests to the interface
• Registered /requests GET route
• Updated test mocks

Testing & Validation

How this was tested

1. All tests pass

Screenshots/Recordings

Unfinished Work & Known Issues

• None, this PR is complete and production-ready
• The following items are intentionally deferred:

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Notes & Nuances

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Pre-Merge Checklist

Code Quality

• [x ] Code follows the project's style guidelines and conventions
• [x ] Self-review completed (I've reviewed my own code for obvious issues)
• [x ] No debugging code, console logs, or commented-out code left behind
• [x ] No merge conflicts with the base branch
• [x ] Meaningful commit messages that explain the "why"

Testing & CI

• [x ] All CI checks are passing
• [x ] All new and existing tests pass locally
• [x ] Test coverage hasn't decreased (or decrease is justified)
• [x ] Linting passes without errors

Documentation

• [x ] Code is self-documenting or includes helpful comments for complex logic
• [x ] API documentation updated (if backend endpoints changed)
• [x ] Type definitions are accurate and up-to-date

Reviewer Notes

• Areas needing extra attention: ...
• Questions for reviewers: ...