[Keyboard] Add Fidelity keyboard (#20922)

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

keyboards/cutie_club/fidelity/readme.md

@@ -0,0 +1,26 @@
+# Fidelity
+
+![Fidelity](https://i.imgur.com/6xelfJeh.jpeg)
+
+The Fidelity is a custom 65% keyboard, a collaboration between HAND Engineering and Koen.
+
+* Keyboard Maintainer: [Cutie Club](https://github.com/cutie-club/)
+* Hardware Supported: STM32F072 based PCB for the Fidelity keyboard
+
+Make example for this keyboard (after setting up your build environment):
+
+    make cutie_club/fidelity:default
+
+Flashing example for this keyboard:
+
+    make cutie_club/fidelity: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 (the top left key) and plug in the keyboard
+* **Physical reset button**: Briefly press the button on the front of the PCB
+* **Keycode in layout**: Press the key mapped to `QK_BOOT` if it is available