[Keyboard] Add Rama Works M4-A (#16570)

* Initial commit

Add Rama Works M4-A keyboard.

* Update default keymap.c

* Update keyboards/machine_industries/m4_a/config.h

Co-authored-by: Ryan <fauxpark@gmail.com>

Co-authored-by: Ryan <fauxpark@gmail.com>

keyboards/machine_industries/m4_a/keymaps/default/keymap.c

@@ -0,0 +1,17 @@
+// Copyright 2022 naut
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include QMK_KEYBOARD_H
+
+// Defines names for use in layer keycodes and the keymap
+enum layer_names {
+    _BASE
+};
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    /* Base */
+    [_BASE] = LAYOUT(
+        KC_1,   KC_2,   KC_3,
+        KC_0
+    )
+};