Reworked rumble configuration and processing

[Kanuan]

• Changed the structure of user defined rumble configurations
• Updated rumble configuration loading from disk to fit changes
• Re-purposed structure that store last received rumble intensities to also store current state of rumble rescaling
  • Before the current state was read/write directly to the user configurations
• Added a IsAllowed property for the current state of rumble rescalers so rescaling can be "blocked" even if it's enabled
  • Set to false if user-defined rescaling ranges are invalid
• Reworked rumble processing to reflect changes above
  • Rescaling constants, if they are enabled and if they are allowed are now fetched from the re-purposed struct commented above
• Changed rumble processing logic so motors can only be disabled while in normal mode

[Kanuan]

I confirm everything is working as expected