rs-client: Cleanup (#1087)

* rs-client: name SpriteBuffer

* rs-client: (re)name spritebuffer methods

* rs-client/deob: Add missed @Export's, make updatemappings fix this next time

* rs-client: run intellij redundant else inspection

* rs-client: invert some script interpreter if's

* deob: checkstyle fixes

* rs-client: SpriteBuffer_loadSprite -> SpriteBuffer_bufferFile

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

@@ -1,3 +1,4 @@
+import net.runelite.mapping.Export;
 import net.runelite.mapping.Implements;
 import net.runelite.mapping.ObfuscatedName;
 import net.runelite.mapping.ObfuscatedSignature;
@@ -10,5 +11,6 @@ public interface Enumerated {
 		signature = "(I)I",
 		garbageValue = "320353268"
 	)
+	@Export("rsOrdinal")
 	int rsOrdinal();
 }