Keymap: Adds TheVan RoadKit Gamepad Layout (#4090)

* adds prototype firmware for wavebeem-gamepad

* adds installer script

* updates readme

* updates title

* adds prototype firmware for wavebeem-gamepad

* adds installer script

* updates readme

* updates title

* removes unused code

* removes more code

* simplify code

keyboards/thevankeyboards/roadkit/keymaps/wavebeem-gamepad/keymap.c

@@ -0,0 +1,10 @@
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+  [0] = LAYOUT_ortho_4x4(
+    KC_TAB,  KC_Q,    KC_W,    KC_E,
+    KC_ESC,  KC_A,    KC_S,    KC_D,
+    KC_LSFT, KC_Z,    KC_X,    KC_C,
+    KC_F,    KC_LALT, KC_LCTL, KC_SPC
+  ),
+};