Most settings don't actually save or reset

[GabeRundlett]

This is literally just because I didn't write this code yet.
notes:

• Only the key bindings (and not the mouse bindings) are modifiable in the settings menu. Mouse settings need to be written
• Only key bindings and the GPU-input parameters are reset when resetting settings, we should also reset things such as
  • battery saving mode
  • resolution scale
  • custom resolution value and bool
    I just need to keep note of things that are issues, so I fix them. I will probably post a few more issues that need fixing.