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/OverloadedMethodCallArgument3.kt

@@ -0,0 +1,13 @@
+fun f(p1: Any, p2: String, p3: Int) {
+    foo("abc", <caret>)
+}
+
+fun foo(p1: String, p2: String) {
+}
+
+fun foo(p1: Int, p2: Int) {
+}
+
+// ABSENT: p1
+// EXIST: p2
+// ABSENT: p3