Add User Authentication

[timnallen]

• Add Email and Password to users table
• Generate and add API_key upon generation
• Adjust endpoint for user creation to include email, password and return API_key
• Add endpoint for user login
• Add API_key requirement for user required endpoint
• Add column for user creator in routines table?
• Only allow the exact user who created it to edit it?
• Add endpoint for returning all users routines AND the ones without a user?
• Fix any broken tests?