Rename "Legacy" control scheme

Merged colette requested to merge fickleheart/SRB2:patch-1 into next

Consider this my formal apology for opening the floodgates of people demanding a tank control scheme when they saw the original name. Ignore this MR if dev already had a better name.

I did this in the web UI and didn't notice I was editing from the next branch

Edited by colette

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