User submissions and uploaded icons.

[MistakeNot4892]

Bit of a fey mood on this one, opening as a draft for visibility and input.

Description of changes

• Adds some helpers for handling GUIDs.
• Adds a system for players raising tickets for admin review/approval.
• Adds an approvals subsystem for saving/loading/tracking approvals.
• Adds an uploaded icons subsystem for saving/loading player-uploaded icons.

TODO

• Basic subsystem logic/structure.
• UI for creating/editing/submitting an approval.
• UI for reviewing/approving/denying an approval as an admin.
• UI for reviewing/removing icons from the subsystem as an admin.
• Add approval subtype for uploading an icon.
• Add approval subtype for an alien/language whitelist.
• Add handling for saving these records to MariaDB or such rather than .json.

Why and what will this PR improve

Currently whitelist approvals and custom icons require quite a bit of external manual involvement. This should allow those processes to be streamlined. Inspiration from the way Eternia allows players to upload arbitrary icons to customise food or such, but hopefully with more oversight and less manual intervention by admins.

Authorship

Myself.

Changelog

Will update this closer to merge.