client side view mode

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

libs/hbb_common/protos/message.proto

@@ -487,6 +487,7 @@ message OptionMessage {
   BoolOption enable_file_transfer = 9;
   VideoCodecState video_codec_state = 10;
   int32 custom_fps = 11;
+  BoolOption disable_keyboard = 12;
 }
 
 message TestDelay {

libs/hbb_common/src/config.rs

@@ -1061,6 +1061,10 @@ impl PeerConfig {
         if !mp.contains_key(key) {
             mp.insert(key.to_owned(), UserDefaultConfig::read().get(key));
         }
+        key = "view-only";
+        if !mp.contains_key(key) {
+            mp.insert(key.to_owned(), UserDefaultConfig::read().get(key));
+        }
         Ok(mp)
     }
 }