[Keyboard] Add KG60 and KG65 (#17565)

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

keyboards/keygem/kg65rgbv2/readme.md

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+# Keygem KG65 RGB V2 
+
+The following is the QMK Firmware for the FJLabs TF65 RGB V2 PCB, a universal tray mount 65% hotswap PCB with per key RGB LED's. 
+
+The PCB will feature:
+* Kailh Hotswap sockets
+* QMK & VIA compatibility
+* Per-Key RGB LED's
+
+
+* Keyboard Maintainer: Keygem
+* Hardware Supported: KG65 RGB V2
+
+Make example for this keyboard (after setting up your build environment):
+
+    make keygem/kg65rgbv2:default
+
+See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).
+
+## Bootloader
+
+Enter the bootloader in 3 ways:
+
+* **Bootmagic reset**: Hold down the key at (0,0) in the matrix (usually the top left key or Escape) and plug in the keyboard
+* **Physical reset button**: Briefly press the button on the back of the PCB - some may have pads you must short instead
+* **Keycode in layout**: Press the key mapped to `RESET` if it is available