Set some default configurations for GMMK Pro (#13219)

* Set some default configurations for GMMK Pro

* Remove FORCE_NKRO to avoid issues with KVMs

keyboards/gmmk/pro/config.h

@@ -46,3 +46,12 @@
 #define LOCKING_SUPPORT_ENABLE
 /* Locking resynchronize hack */
 #define LOCKING_RESYNC_ENABLE
+
+/* 1000Hz USB polling - it's the default on stock firmware */
+#define USB_POLLING_INTERVAL_MS 1
+
+/* Send up to 4 key press events per scan */
+#define QMK_KEYS_PER_SCAN 4
+
+/* Set debounce time to 5ms */
+#define DEBOUNCE 5