[SHUFEN]

Implement native functions to allow manipulation and retrieval of entities' m_ResponseContexts values from plugins.
This is useful for some maps.
https://developer.valvesoftware.com/...ivator_context

native int Context_GetContextCount(int entity);
native int Context_GetContextName(int entity, int index, char[] buffer, int maxlen);
native int Context_GetContextValue(int entity, int index, char[] buffer, int maxlen);
native int Context_FindContextByName(int entity, const char[] contextName);
native int Context_GetContextValueByName(int entity, const char[] contextName, char[] buffer, int maxlen);
native bool Context_AddContext(int entity, const char[] context);
native bool Context_ClearContext(int entity);
native bool Context_RemoveContext(int entity, const char[] contextName);