Added tests.

tests/cases/conformance/es6/templates/taggedTemplateWithConstructableTag01.ts

@@ -0,0 +1,3 @@
+class CtorTag { }
+
+CtorTag `Hello world!`;

tests/cases/conformance/es6/templates/taggedTemplateWithConstructableTag02.ts

@@ -0,0 +1,6 @@
+interface I {
+    new (...args: any[]): string;
+    new (): number;
+}
+var tag: I;
+tag `Hello world!`;