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/JavaClassNames.kt

@@ -0,0 +1,12 @@
+package testing
+
+// Should show java names by short name
+class Hello() {
+   fun test() {
+       val a : S<caret>
+   }
+}
+
+// INVOCATION_COUNT: 2
+// EXIST: SortedMap, Short, Socket
+// ABSENT: hashSetOf