[Keyboard] move niu_mini to /kbdfans (#16112)

keyboards/kbdfans/niu_mini/keymaps/tucznak/config.h

@@ -0,0 +1,16 @@
+#pragma once
+
+#undef MANUFACTURER
+#undef PRODUCT
+
+#define MANUFACTURER    Potato Inc.
+#define PRODUCT         Qt3.14
+
+/* turn off RGB when computer sleeps */
+#ifdef RGB_DI_PIN
+#define RGBLIGHT_SLEEP
+#endif
+
+/* send tap key if no layer key was used even after tap delay */
+#define TAPPING_TERM 50
+#define RETRO_TAPPING