Create event type/code lookup tables

Create event type/code lookup tables

Additionally to type->string mapping tables we now also create
string->type lookup tables. The lookup tables are sorted by their name
so binary-search will work.

We create one lookup table for EV_* types and one for all event-codes.
More tables (like bus-names, input-properties, ..) can be added later.

Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>