[Keyboard] Added via support for JISplit89 (#10547)

-Changing the VID
-Add a keymap via
-Keymap and copyright fixes

keyboards/jisplit89/rev1/rev1.c

@@ -1 +1,18 @@
+/*
+Copyright 2020 Salicylic_Acid
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
 #include "rev1.h"