Add Chew keyboard (#23628)

keyboards/chew/readme.md

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+## Chew
+
+![Chew front photo](https://live.staticflickr.com/65535/53681212617_90e4eebaf9_o.jpg)
+![Chew front photo](https://live.staticflickr.com/65535/53682442119_1fcea26fef_o.jpg)
+
+A humble 34 key choc-spaced keyboard.
+
+- Keyboard Maintainer: [Florent Linguenheld](https://github.com/flinguenheld/)
+- Visit the repository to get the last release: [Chew](https://github.com/flinguenheld/chew)
+- Read the wiki to have some help or information: [Chew wiki](https://github.com/flinguenheld/chew/wiki)
+
+
+![squirrel](https://github.com/flinguenheld/chew/blob/main/images/squirrel_brown.png?raw=true)
+
+### Requirements
+
+- 2x PCB
+- 2x MCU board [RP2040-Zero](https://www.waveshare.com/wiki/RP2040-Zero)
+- 2x TRRS jack
+- 34 switches Choc V1 **only**
+- 34 keycaps Choc V1
+
+Optional:
+- 23 [Mill Max sockets](https://splitkb.com/collections/keyboard-parts/products/mill-max-low-profile-sockets)
+- 34 [kailh hotswap sockets](https://cdn.shopify.com/s/files/1/0588/1108/9090/files/5118-Choc-Socket.pdf?v=1686715063)
+- 2x Back PCB + screws and bolts
+- 2x [Tenting pucks](https://splitkb.com/collections/keyboard-parts/products/tenting-puck)
+- 2x [Tripods](https://www.manfrotto.com/us-en/pocket-support-large-black-mp3-bk/)
+
+### Bootloader
+
+The controller has two buttons, so you can enter the bootloader in 2 ways:
+
+- Maintain the **boot** button and plug the usb cable in.
+- Press twice the **reset** button.
+
+![hazelnuts](https://github.com/flinguenheld/chew/blob/main/images/hazelnuts.png?raw=true)
+![Chew back photo](https://live.staticflickr.com/65535/53682442124_677ffa6cb5_o.jpg)