From now on, sketches are created in the temp folder,
and will be moved to the `directories.user` location
when the user performs a manual `Save`.
A new sketch can be created with the `CtrlCmd+N` binding.
Closes: arduino/arduino-pro-ide#260Closes: arduino/arduino-pro-ide#261
Signed-off-by: Akos Kitta <kittaakos@typefox.io>
