Configuration: move scratch tests to separate module

idea/scripting-support/testData/scratch/unresolvedMultiline.kts

@@ -0,0 +1,9 @@
+// REPL_MODE: ~REPL_MODE~
+
+foo.forEach {
+    1 + 1
+}
+
+fun goo(a: String) {
+    super.goo(a)
+}