JetDiagnosticsTest migrated to TestGenerator

- test data files renamed from *.jet to *.kt

compiler/testData/diagnostics/tests/regressions/OutProjections.kt

@@ -0,0 +1,21 @@
+class Point() {
+}
+
+class G<T>() {}
+
+fun f<T>(<!UNUSED_PARAMETER!>expression<!> : T) : G<out T> = G<T>()
+
+
+fun foo() : G<Point> {
+  val p = Point()
+  return <!TYPE_MISMATCH!>f<Point>(p)<!>
+}
+
+class Out<out T>() {}
+
+fun fout<T>(<!UNUSED_PARAMETER!>expression<!> : T) : Out<out T> = Out<T>()
+
+fun fooout() : Out<Point> {
+  val p = Point();
+  return fout<Point>(p);
+}