feat: scaffold users/matej shared QMK userspace

users/matej/matej.h

@@ -0,0 +1,15 @@
+#pragma once
+
+#include "quantum.h"
+
+enum layers {
+    _BASE,
+    _FN,
+    _NAV,
+    _GAME,
+};
+
+enum custom_keycodes {
+    M_DSC_SEP = SAFE_RANGE,
+    M_BASE_PEEK,
+};