chat commands: add Nexling pet

Co-authored-by: Illya Myshakov <imyshako@uwaterloo.ca>

runelite-client/src/main/java/net/runelite/client/plugins/chatcommands/Pet.java

@@ -79,7 +79,8 @@ enum Pet
 	YOUNGLLEF("Youngllef", ItemID.YOUNGLLEF),
 	LITTLE_NIGHTMARE("Little nightmare", ItemID.LITTLE_NIGHTMARE),
 	LIL_CREATOR("Lil' creator", ItemID.LIL_CREATOR),
-	TINY_TEMPOR("Tiny tempor", ItemID.TINY_TEMPOR);
+	TINY_TEMPOR("Tiny tempor", ItemID.TINY_TEMPOR),
+	NEXLING("Nexling", ItemID.NEXLING);
 
 	private final String name;
 	private final Integer iconID;