Pulling refs/heads/feature/login into main

[github-actions[bot]]

Login

Description

Tidies up the login process so that it creates the player entity if one doesn't exist.

The first user to login automatically gets administrator and player privileges.

Tidy up the menu to reflect whether a someone holds the player role or not.

• [x] New feature (non-breaking change which adds functionality)

How Has This Been Tested?

• [x] Manual testing by deleting the local user, and recreating.

Checklist:

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my own code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings