mykie:define-key-with-self-key: Apply ignoring mykie's function

If you set those values mykie:ignore-major-modes-for-self-insert-key and
mykie:ignore-minor-modes-for-self-insert-key, then you can ignore
mykie's function and use self-insert-key instead of it.
Note this function is available only when you set mykie's function to
self-insert-key.
mykie:set-keys: fix problem that can't register with specific mode
Replace key name's " " to "_"