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/ServerBuild.java

@@ -32,7 +32,7 @@ public class ServerBuild {
 	@Export("WIP")
 	static final ServerBuild WIP;
 	@ObfuscatedName("f")
-	static int[] field3103;
+	static int[] Tiles_hue;
 	@ObfuscatedName("k")
 	@Export("name")
 	public final String name;