context pointer within GekkonetAdapter

Author: HeatXD

GekkoLib/include/gekkonet.h

@@ -91,6 +91,8 @@ typedef struct GekkoNetAdapter {
     GekkoNetResult** (*receive_data)(int* length);
     // free data function so gekkonet can cleanup data that the user created.
     void (*free_data)(void* data_ptr);
+    // context data. can be any data. just be sure to clean / manage it yourself.
+    void* ctx_data;
 } GekkoNetAdapter;
 
 typedef enum GekkoGameEventType {