Created module idea-test-framework and moved classes needed for idea tests there

Moved tests for completion and their test data into module idea-completion

idea/idea-completion/testData/smart/constructor/NoInnerClassInstantiation.kt

@@ -0,0 +1,11 @@
+class C {
+    inner class Inner
+}
+
+fun foo() : C.Inner {
+    return <caret>
+}
+
+// ABSENT: Inner
+// EXIST: foo
+// NUMBER: 1