Transaction Relations Backend

[DiegolMarques]

Branch name: transaction-relations

Task at Hand

1. Update transaction controller with relation queries:
   • Add to controllers/organizaitons.ts and in controllers/contributors.ts:
     • getOrganizationTransactions
     • getContributorTransactions
2. Add corresponding routes:
   • GET /organizations/:id/transactions
   • GET /contributors/:id/transactions

Testing

Test these by creating a test page in the test folder. Use backend test for reference.