* Create Turbo Mode submenu under Button Mappings
"Enable Turbo Mode" was moved into this new menu.
* Add Turbo Mode Button remap to the Turbo Mode settings menu
* Rename the Turbo Mode Settings enum
* Remove an extra TriggerUpdate added by mistake
* Fix an edge case where Turbo could be activated on dpad up/left when nunchuck Z/C is mapped
* Rename the Turbo Mode submenu to "Other Mappings"
* Add an enumeration for the remappable buttons for Turbo Mode
This adds the following:
- A new gamemenu option called Audio
- Under the new gamemenu option an option Interpolation with three options: Gaussian (Default), Linear, None