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

idea/testData/quickfix/createFromUsage/createFunction/get/afterCreateGetFromUsage1.kt

@@ -0,0 +1,10 @@
+// "Create function 'get' from usage" "true"
+class Foo<T> {
+    fun x (y: Foo<Iterable<T>>) {
+        val z: Iterable<T> = y[""]
+    }
+
+    fun get(s: String): T {
+        throw UnsupportedOperationException("not implemented") //To change body of created functions use File | Settings | File Templates.
+    }
+}