sessions: track GameID

sessions.proto

@@ -22,6 +22,7 @@ message SessionResponse {
   int64 Date = 4;
   uint32 Duration = 5;
   uint32 Attempts = 6;
+  uint32 GameID = 7;
 }
 
 message SessionCreate {
@@ -30,6 +31,7 @@ message SessionCreate {
   int64 Date = 3;
   uint32 Duration = 4;
   uint32 Attempts = 5;
+  uint32 GameID = 6;
 }
 
 enum SessionSort {
@@ -39,6 +41,7 @@ enum SessionSort {
 message SessionFilter {
   optional uint64 UserID = 1;
   optional uint64 MapID = 2;
+  optional uint32 GameID = 3;
 }
 
 message SessionList { repeated SessionResponse Sessions = 1; }