[Keyboard] Add CMK11 (#23239)

* adding cmk11

* correcting default keymap

* removing rules.mk

* removing unnecessary comment

keyboards/custommk/cmk11/config.h

@@ -0,0 +1,29 @@
+// Copyright 2024 customMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+// FRAM configuration
+#define EXTERNAL_EEPROM_SPI_SLAVE_SELECT_PIN B7
+#define EXTERNAL_EEPROM_SPI_CLOCK_DIVISOR 4 // 48MHz / 4 = 12MHz; max supported by MB85R64 is 20MHz
+
+// SPI configuration
+#define SPI_DRIVER SPID1
+#define SPI_SCK_PIN B3
+#define SPI_MOSI_PIN B5
+#define SPI_MISO_PIN B4
+
+// Audio configuration
+#define AUDIO_PIN B8
+#define AUDIO_PWM_DRIVER PWMD4
+#define AUDIO_PWM_CHANNEL 3 
+#define AUDIO_PWM_PAL_MODE 2
+#define AUDIO_STATE_TIMER GPTD5
+#define AUDIO_INIT_DELAY
+
+// WS2812 configuration
+#define WS2812_PWM_DRIVER PWMD1
+#define WS2812_PWM_CHANNEL 3
+#define WS2812_PWM_PAL_MODE 1
+#define WS2812_DMA_STREAM STM32_DMA2_STREAM5
+#define WS2812_DMA_CHANNEL 6