[Keyboard] Add Moondrop Dash75 (#20890)

Co-authored-by: Drashna Jaelre <drashna@live.com>

keyboards/moondrop/dash75/r1/config.h

@@ -0,0 +1,10 @@
+// Copyright 2023 moondroplab (@moondroplab)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#define SERIAL_NUMBER "Dash 75"
+
+#define USB_SUSPEND_WAKEUP_DELAY 5000  // wait for USB hub to start
+
+#define HOLD_ON_OTHER_KEY_PRESS

keyboards/moondrop/dash75/r1/info.json

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+{
+    "usb": {
+        "pid": "0x7501",
+        "device_version": "1.5.0"
+    }
+}

keyboards/moondrop/dash75/r1/rules.mk

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+# This file intentionally left blank
+# ** Settings are Data Driven and reside in `info.json` **