Create From Usage: Move "Create function"-related tests to separate directory

idea/testData/quickfix/createFromUsage/createFunction/component/beforeCreateComponentFromUsage3.kt

@@ -0,0 +1,18 @@
+// "Create function 'component2' from usage" "true"
+class FooIterator<T> {
+    fun hasNext(): Boolean { return false }
+    fun next(): Any {
+        throw UnsupportedOperationException("not implemented")
+    }
+}
+class Foo<T> {
+    fun iterator(): FooIterator<String> {
+        throw UnsupportedOperationException("not implemented")
+    }
+}
+fun Any.component1(): Int {
+    return 0
+}
+fun foo() {
+    for ((i: Int, j: Int) in Foo<caret><Int>()) { }
+}