feat(cam): support format conversion function

components/esp_driver_cam/interface/esp_cam_ctlr_interface.h

@@ -8,6 +8,7 @@
 #include <stdbool.h>
 #include "esp_err.h"
 #include "esp_cam_ctlr_types.h"
+#include "hal/cam_ctlr_types.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -146,6 +147,19 @@ struct esp_cam_ctlr_t {
      */
     void *(*alloc_buffer)(esp_cam_ctlr_t *, size_t, uint32_t);
 
+    /**
+     * @brief Configure format conversion
+     *
+     * @param[in] esp_cam_ctlr_t *      ESP CAM controller handle
+     * @param[in] const cam_ctlr_format_conv_config_t * Color conversion configuration
+     *
+     * @return
+     *        - ESP_OK on success
+     *        - ESP_ERR_INVALID_ARG:   Invalid argument
+     *        - ESP_ERR_NOT_SUPPORTED: Format conversion not supported by this controller
+     */
+    esp_err_t (*format_conversion)(esp_cam_ctlr_t *, const cam_ctlr_format_conv_config_t *);
+
     void *user_data;  ///< User data
 };