[Lua] Add CONTROL_SWITCH functions to `types.Player` and deprecate them in `openmw.input`

Petr Mikheevrequested to merge
ptmikheev/openmw:control_switch into master

Add CONTROL_SWITCH functions to types.Player and deprecate them in openmw.input.

Needed because openmw.input will be available in menu scripts, and CONTROL_SWITCH doesn't make sense there.

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