Move can_reload and rate_action_* functions

[olanti-p]

Summary

SUMMARY: Infrastructure "Moved can_reload and rate_action_* functions"

Purpose of change

Chipping away at player class as part of deprecating it (see #34721)
Collecting all rate_action_* functions in 2 spots

Describe the solution

Moved the majority of rate_action_* functions from player/avatar/Character into game.cpp and made them static - since that was the only place where they were used.

These functions required small modifications in the name of bug fixing / code organization:

• rate_action_change_side
• rate_action_disassemble
• rate_action_wear
• rate_action_takeoff

These functions are used in loading/unloading code and had to be moved, unchanged, into Character class:

• rate_action_unload
• rate_action_reload - required can_reload to be moved as well

Describe alternatives you've considered

Splitting these functions between avatar and Character, but I figured that functions that are used only in item examination screen should stay near that item examination screen.

Testing

For various items, opened item examination menu and tried listed actions.
Assembled an ammo belt from linkages & rounds.
Disassembled a TV.

[kevingranade]

Just as future direction, we really don't want game.cpp getting any bigger either, this ui element should move to its own module.