Refactor unpackclass's ArrayUtils class

Signed-off-by: Graham <gpe@openrs2.dev>

share/deob/map/unpackclass.yaml

@@ -10,7 +10,7 @@ classes:
   unpackclass!i: "IntHashTable"
   unpackclass!j: "Class206"
   unpackclass!k: "GzipDecompressor"
-  unpackclass!l: "Class208"
+  unpackclass!l: "ArrayUtils"
   unpackclass!n: "Class209"
   unpackclass!o: "Class210"
   unpackclass!p: "Class199_Sub1"
@@ -752,21 +752,21 @@ methods:
     locals:
       55: "ex"
   unpackclass!l.a ([BI[BII)V:
-    owner: "Class208"
-    name: "method4926"
+    owner: "ArrayUtils"
+    name: "copy"
     arguments:
-      0: "arg0"
-      1: "arg1"
-      2: "arg2"
-      3: "arg3"
-      4: "arg4"
+      0: "src"
+      1: "srcOff"
+      2: "dest"
+      3: "destOff"
+      4: "len"
     locals:
-      19: "local19"
-      23: "local23"
-      32: "local32"
-      35: "local35"
-      119: "local119"
-      122: "local122"
+      19: "srcOff2"
+      23: "destOff2"
+      32: "destOff3"
+      35: "srcOff3"
+      119: "destOff2"
+      122: "srcOff2"
   unpackclass!p.<init> ([BZZ)V:
     owner: "Class199_Sub1"
     name: "<init>"