Support both esp_video and esp32_camera (#1671)

* Update project version to 2.2.1 and refactor camera component handling

- Incremented project version from 2.2.0 to 2.2.1 in CMakeLists.txt.
- Removed legacy esp32_camera component and replaced it with esp_video for ESP32-S3 and ESP32-P4 boards.
- Updated board implementations to utilize the new esp_video component, ensuring compatibility and improved functionality.
- Cleaned up Kconfig options related to camera selection, streamlining the configuration process.
- Enhanced camera initialization logic across various board files to support the new component structure.

* Refactor camera handling in AtomS3R CAM/M12 EchoBase board

- Replaced the legacy EspVideo component with the new Esp32Camera class for improved camera functionality.
- Updated camera initialization logic to utilize a more structured configuration approach, enhancing clarity and maintainability.
- Removed outdated comments and code related to the previous camera implementation in the README file.

* Update camera configuration for atoms3r-cam-m12-echo-base

- Removed outdated camera configuration options from config.json to streamline the setup.
- Retained essential partition table configuration for improved clarity.

* Enhance Esp32Camera functionality and memory management

- Added esp_timer.h for improved timing functionality.
- Streamlined camera initialization by removing redundant frame buffer setup and logging.
- Improved memory allocation for JPEG encoding and added error handling for unsupported pixel formats.
- Updated comments for clarity and consistency, ensuring better understanding of the code flow.

main/Kconfig.projbuild

@@ -737,31 +737,6 @@ menu "Camera Configuration"
 
     comment "Warning: Please read the help text before modifying these settings."
 
-    choice XIAOZHI_CAMERA_COMPONENT
-        prompt "Camera Component Selection"
-        default XIAOZHI_USE_ESP_VIDEO if IDF_TARGET_ESP32S3
-        default XIAOZHI_USE_ESP_VIDEO if IDF_TARGET_ESP32P4
-        help
-            Select the camera component to use.
-            ESP32-S3 can choose between esp_camera (legacy) or esp_video (new).
-            ESP32-P4 only supports esp_video.
-
-        config XIAOZHI_USE_ESP_CAMERA
-            bool "Use esp_camera (legacy component)"
-            depends on IDF_TARGET_ESP32S3
-            help
-                Use the legacy esp32-camera component.
-                This is the traditional camera driver for ESP32-S3.
-
-        config XIAOZHI_USE_ESP_VIDEO
-            bool "Use esp_video (new component)"
-            depends on IDF_TARGET_ESP32S3 || IDF_TARGET_ESP32P4
-            help
-                Use the new esp_video component.
-                This component provides V4L2-like interface and is required for ESP32-P4.
-                On ESP32-S3, it provides additional features but may require different camera configuration.
-    endchoice
-
     config XIAOZHI_CAMERA_ALLOW_JPEG_INPUT
         bool "Allow JPEG Input"
         default n