[Keyboard] Add Kalakos Bahrnob65 (#20424)

Co-authored-by: Joel Challis <git@zvecr.com>

keyboards/kalakos/bahrnob/readme.md

@@ -0,0 +1,27 @@
+# BAHRNOB65
+
+![BAHRNOB65](https://i.imgur.com/AK1ksQEh.jpeg)
+
+Bahrnob 65: Gasket Mount 65%
+
+* Keyboard Maintainer: [Zykrah](https://github.com/zykrah)
+* Hardware Supported: Bahrnob65 Solder PCB
+* Hardware Availability: N/A
+
+Make example for this keyboard (after setting up your build environment):
+
+    make kalakos/bahrnob65:default
+
+Flashing example for this keyboard:
+
+    make kalakos/bahrnob65: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 (usually the top left key or Escape) and plug in the keyboard
+* **Physical reset button**: Briefly press the reset button on the back of the pcb
+* **Keycode in layout**: Press the key mapped to `QK_BOOT` if it is available