Add "number-renaming" to AutoEnum

[tmr232]

Currently, the workflow of AutoEnum is a bit annoying. It would be nice to just rename a constant in the code, not caring where it is saved. This can be done using a different hotkey and a default enum.

Also, it would be nice to add a move-to-enum option, to later move the desired constants into new enums, preserving all uses.

[tmr232]

Closing for now. move-to-enum may be added later.