Server pushing media at runtime (#9961)

src/network/networkprotocol.h

@@ -323,6 +323,15 @@ enum ToClientCommand
 		v3f added_vel
 	 */
 
+	TOCLIENT_MEDIA_PUSH = 0x2C,
+	/*
+		std::string raw_hash
+		std::string filename
+		bool should_be_cached
+		u32 len
+		char filedata[len]
+	*/
+
 	// (oops, there is some gap here)
 
 	TOCLIENT_CHAT_MESSAGE = 0x2F,