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/handlers/basic/SpaceAfterParenthesisBug.kt

@@ -0,0 +1,8 @@
+class Pair(val first: Int, val second: Int)
+
+fun foo(p: Pair) {
+    if (p.<caret>first < p.second)
+}
+
+// ELEMENT: hashCode
+// CHAR: '\t'