Merge branch 'feature/KASM-2797_force_full_frame' into 'master'

Add /api/send_full_frame

Closes KASM-2797

See merge request kasm-technologies/internal/KasmVNC!50

common/rfb/VNCServerST.h

@@ -197,6 +197,8 @@ namespace rfb {
     void handleClipboardAnnounceBinary(VNCSConnectionST* client, const unsigned num,
                                        const char mimes[][32]);
 
+    void refreshClients();
+
   protected:
 
     friend class VNCSConnectionST;