Character code reorganization 09-jan-2023

[olanti-p]

Summary

SUMMARY: Infrastructure "Reorganized some Character-related code"

Purpose of change

Dismantling player.

Describe the solution

See commits.

1. Move some functions and members out of player into Character
2. Move some functions out of player and turn them into namespaced functions
3. Move some functions out of Character and turn them into namespaced functions
4. Move reload_option out of item to allow forward declaring it
5. Fix traits/mounts not affecting NPC lift strength when assisting
6. Encapsulate theft witnessing code
7. Remove some dead code
8. Remove some dead parameters
9. Opportunistically migrate from g->u

Testing

Game compiles. No behavior changes intended.

TODO:

• Playtest the changes
• See what clang-tidy thinks about this

Additional context

I don't like how creature.cpp is growing here, may need to split it up later

[Coolthulhu]

Conflicts with #2254. I'll mergetest #2254 first, because it's older.

[olanti-p]

Resolved.