enable keyframe interval when recording

Signed-off-by: 21pages <pages21@163.com>

src/ui/header.tis

@@ -297,6 +297,7 @@ class Header: Reactor.Component {
     event click $(span#recording) (_, me) {
         recording = !recording;
         header.update();
+        handler.record_status(recording);
         if (recording)
             handler.refresh_video();
         else

src/ui/remote.rs

@@ -451,6 +451,7 @@ impl sciter::EventHandler for SciterSession {
         fn save_custom_image_quality(i32);
         fn refresh_video();
         fn record_screen(bool, i32, i32);
+        fn record_status(bool);
         fn get_toggle_option(String);
         fn is_privacy_mode_supported();
         fn toggle_option(String);