RS-Client: Refactoring (also gradle compiler args) (#1236)

* gradle: compiler args for mixins/rs-client

* rs-client: yes

* rs-client: no

runescape-client/src/main/java/Clock.java

@@ -30,7 +30,7 @@ public abstract class Clock {
 		garbageValue = "-333181863"
 	)
 	@Export("wait")
-	public abstract int wait(int var1, int var2);
+	public abstract int wait(int tickLength, int fiveOrOne);
 
 	@ObfuscatedName("fx")
 	@ObfuscatedSignature(