feat: add entity creation method to OverteClient

src/OverteClient.hpp

@@ -73,6 +73,10 @@ public:
 	std::vector<OverteEntity> consumeUpdatedEntities();
 	std::vector<std::uint64_t> consumeDeletedEntities();
 	
+	// Entity creation
+	void createEntity(const std::string& name, EntityType type, const glm::vec3& position, 
+	                  const glm::vec3& dimensions, const glm::vec3& color);
+
 private:
 	void parseNetworkPackets(); // standards-aligned parsing (scaffold)
 	void parseEntityPacket(const char* data, size_t len);