Add Chew keyboard (#23628)

keyboards/chew/config.h

@@ -0,0 +1,11 @@
+// Copyright 2024 Florent (@FLinguenheld)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+/* Flash */
+#define RP2040_BOOTLOADER_DOUBLE_TAP_RESET              // Activates the double-tap behavior
+#define RP2040_BOOTLOADER_DOUBLE_TAP_RESET_TIMEOUT 200U // In ms in which the double tap can occur
+
+#define EE_HANDS
+#define SERIAL_USART_TX_PIN GP11