Initial structure for Ergodox as subprojects

Only the EZ default keymaps compiles at the moment though.

keyboards/ergodox/keymaps/erez_experimental/config.h

@@ -0,0 +1,12 @@
+#ifndef CONFIG_USER_H
+#define CONFIG_USER_H
+
+#include "../../config.h"
+
+#define ONESHOT_TAP_TOGGLE 2
+#define ONESHOT_TIMEOUT 300
+
+#undef LEADER_TIMEOUT
+#define LEADER_TIMEOUT 300
+
+#endif