Organize KPrepublic, K.T.E.C, xiudi boards into directories (#12159)

* reset; redoing my steps; and recommit

* include xd002/.noci

keyboards/xiudi/xd004/keymaps/system_and_media/keymap.c

@@ -0,0 +1,59 @@
+#include QMK_KEYBOARD_H
+
+#define _BASE 0    // Base layer
+#define _SYSTEM 1  // System actions
+#define _VOLUME 2  // Volume actions
+
+#define SUPER_ALT_F4_TIMER 300  // Timeout on the super alt-f4 key
+
+/*
+    The idea of this is pretty simple: base layer has four action, two of which (the outermost)
+    are regular keystrokes on tap, and a momentary layer switch on hold, sending you to layers 1 and 2.
+
+    The other bit of customization here is the 'Super Alt F4' which does Alt-F4, and then Enter if tapped
+    again SUPER_ALT_F4_TIMER miliseconds after. This lets you Alt-F4 applications, and finally quickly
+    double-tap it to Alt-F4+Enter to shut down the PC.
+*/
+
+bool is_alt_f4_active = false;
+uint16_t alt_f4_timer = 0;
+
+enum custom_keycodes {  // Make sure have the awesome keycode ready
+    SUPER_ALT_F4 = SAFE_RANGE,
+};
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+    // 0: Base Layer
+    [_BASE] = LAYOUT_all(LT(_SYSTEM, KC_F5), C(G(KC_LEFT)), C(G(KC_RIGHT)), LT(_VOLUME, KC_F7)),
+
+    // 1: System actions
+    [_SYSTEM] = LAYOUT_all(_______, SUPER_ALT_F4, G(KC_D), G(KC_L)),
+
+    // 2: Volume actions
+    [_VOLUME] = LAYOUT_all(KC_MEDIA_NEXT_TRACK, KC_AUDIO_VOL_DOWN, KC_AUDIO_VOL_UP, _______),
+
+};
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+    switch (keycode) {  // This will do most of the grunt work with the keycodes.
+        case SUPER_ALT_F4:
+            if (record->event.pressed) {
+                if (!is_alt_f4_active) {
+                    is_alt_f4_active = true;
+                    tap_code16(LALT(KC_F4));  // Alt-F4
+                } else {
+                    tap_code(KC_ENTER);  // Tap enter
+                }
+            }
+            alt_f4_timer = timer_read();
+            break;
+    }
+    return true;
+}
+
+void matrix_scan_user(void) {
+    if (is_alt_f4_active && timer_elapsed(alt_f4_timer) > SUPER_ALT_F4_TIMER) {
+        is_alt_f4_active = false;
+    }
+};