Update Login Routes for 3rd Tier Admin

[klinkoberstar]

Description:

• Update the login routes to accommodate the new 3rd tier admin structure.
• Add a function has_org_admin(user) to check if a user is an admin for an organization.
• Ensure the login logic checks the User_org_role table for admin rights.

Tasks:

• Add has_org_admin(user) function.
• Update login routes to include the new admin checks.
• Test the updated login routes to ensure proper admin rights are applied.

Dependencies:

This ticket depends on the completion of:

• Database Migration for 3rd Tier Admin #280