[Keyboard] Add banime40 keyboard (#16694)

Co-authored-by: Ryan <fauxpark@gmail.com>

keyboards/sporewoh/banime40/readme.md

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+# banime40 
+
+![](https://i.imgur.com/sHQyMfEh.jpeg)
+
+A hotswap gasket mount 4x10 that can support multiple layouts.
+
+* Keyboard Maintainer: [sporewoh](https://github.com/ChrisChrisLoLo)
+* Hardware Supported: Open source PCB files, Pro Micro compatible
+* Hardware Availability: PCBs and Case files available [here](https://github.com/ChrisChrisLoLo/banime40)
+
+Make example for this keyboard (after setting up your build environment):
+
+    make sporewoh/banime40:default
+
+Flashing example for this keyboard:
+
+    make sporewoh/banime40: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 2 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