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/basic/java/TopLevelFromStandardLibraryWithoutParam.kt

@@ -0,0 +1,10 @@
+package testing
+
+fun someFun() {
+  defaultDocumentBuilderFa<caret>
+}
+
+// Important: This test checks that completion will find top level functions from jars.
+// If you going to update it make sure that methods are not auto-imported
+
+// EXIST: defaultDocumentBuilderFactory