[Keyboard] Add BIOI F60 (#14763)

keyboards/bioi/f60/readme.md

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+# BIOI F60
+
+![f60](https://i.imgur.com/xOcgowIl.jpg)
+
+60% PCB used in the Percent Trio HHKB
+
+* Keyboard Maintainer: [kb-elmo](https://github.com/kb-elmo)
+* Hardware Supported: BIOI F60v1.0 PCB
+* Hardware Availability: (Ended groupbuy) https://percent.studio/trio-60
+
+Make example for this keyboard (after setting up your build environment):
+
+    make bioi/f60:default
+
+Flashing example for this keyboard:
+
+    make bioi/f60: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
+
+* **Bootmagic reset**: Hold down the top left key (ESC) and plug in the keyboard
+* **Physical reset button**: Short the two small pads labeled "RESET" the back of the PCB
+* **Keycode in layout**: Press the key mapped to `RESET` if it is available