Added .binds load-profile <file> and .binds save-profile <file> commands.

These commands allow you to save all of your keybinds into a profile and then load that profile whenever you want.

You can have multiple profiles, each with a different set of keybinds in them. You can also keybind the .binds load-profile command to instantly switch to a different profile.

This way, you are no longer limited by the number of keys on your keyboard. You can have INFINITE KEYBINDS!!!