Use IItemHandler instead of IInventory internally (#2971)

* Use IItemHandler instead of IInventory internally

src/main/java/appeng/recipes/loader/RecipeResourceCopier.java

@@ -232,7 +232,7 @@ public class RecipeResourceCopier
 				{
 					final Enumeration<JarEntry> entries = jar.entries(); // gives ALL entries in jar
 					final Collection<String> result = new HashSet<>( INITIAL_RESOURCE_CAPACITY ); // avoid
-																										// duplicates
+																									// duplicates
 
 					// in case it is a
 					// subdirectory