[Keyboard] Add gameroyadvance (#16882)

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

1 files changed, 30 insertions, 0 deletions

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+# Game Roy ADVANCE
+
+![Game Roy ADVANCE](https://i.imgur.com/N6RI4fUh.jpg)
+![GRALAYOUTS](https://i.imgur.com/lHjTRQK.png)
+
+A one-handed, expandable game pad designed to take your pc gaming to the next level. Designed by [Keystone Caps](https://keystonecaps.store).
+
+* Keyboard Maintainer: [RoyMeetsWorld](https://github.com/ROYMEETSWORLD)
+* Hardware Supported: Game Roy ADVANCE
+* Hardware Availability: [keystonecaps.store](https://keystonecaps.store)
+
+Make example for this keyboard (after setting up your build environment):
+
+    make keystonecaps/gameroyadvance:default
+
+Flashing example for this keyboard:
+
+    make keystonecaps/gameroyadvance:default:flash
+
+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 (Escape) and plug in the keyboard
+* **Physical reset button**: Briefly press the button on the back of the PCB
+* **Keycode in layout**: Press the key mapped to `RESET` (FN + Escape by default)
+
+Special thanks to @tpstevens for all of his hard work in creating these firmware files from the mess that I had made.