[Keyboard] Add Kudox Rev2 (#7253)

* Add a directory as rev2 in keybords/kudox.

* Modified default keymap of Kudox.

* Modified JIS keymap of Kudox.

* Changed kudox default from rev1 to rev2.

* Modified a keymap of kudox/x1.

* Move keyboards/kudox/keymaps to keyboards/kudox/rev1/.

* Remove keyboards/kudox/info.json.

* Modified kudox's READMEs.

* Remove unnecessary codes.

keyboards/kudox/rev1/keymaps/x1/config.h

@@ -0,0 +1,17 @@
+/* Copyright 2019 Kumao Kobo <kumaokobo@gmail.com>
+ *
+ * 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/>.
+ */
+
+#pragma once