feat: add snapshot mcp tool (#1196)

* use main task to execute tool calls

* feat: add snapshot mcp tool

* fix compiling errors

* 取消 audio input 的 pin core，core1留给显示，可能会对aec性能有影响

* update ml307 version

* remove v1 theme colors

main/boards/sensecap-watcher/sscma_camera.cc

@@ -1,6 +1,7 @@
 #include "sscma_camera.h"
 #include "mcp_server.h"
 #include "lvgl_display.h"
+#include "lvgl_image.h"
 #include "board.h"
 #include "system_info.h"
 #include "config.h"
@@ -245,7 +246,8 @@ bool SscmaCamera::Capture() {
     // 显示预览图片
     auto display = dynamic_cast<LvglDisplay*>(Board::GetInstance().GetDisplay());
     if (display != nullptr) {
-        display->SetPreviewImage(&preview_image_);
+        auto image = std::make_unique<LvglSourceImage>(&preview_image_);
+        display->SetPreviewImage(std::move(image));
     }
     return true;
 }