Merge branch 'issue_nnsr' into 'VTM-11.0_nnvc'

add fwd decl to solve build issue when AC0196 macro off

See merge request jvet-ahg-nnvc/VVCSoftware_VTM!61

source/Lib/EncoderLib/EncNNFilter.h

@@ -50,6 +50,12 @@
 #include <fstream>
 using namespace std;
 
+namespace sadl {
+template<typename T> class Model;
+template<typename T> class Tensor;
+}
+
+
 class EncNNFilter
 {
 public: