Added tests for template strings with string literal types.

tests/cases/conformance/types/stringLiteral/stringLiteralTypesWithTemplateStrings01.ts

@@ -0,0 +1,7 @@
+// @declaration: true
+
+let ABC: "ABC" = `ABC`;
+let DE_NEWLINE_F: "DE\nF" = `DE
+F`;
+let G_QUOTE_HI: 'G"HI';
+let JK_BACKTICK_L: "JK`L" = `JK\`L`;

tests/cases/conformance/types/stringLiteral/stringLiteralTypesWithTemplateStrings02.ts

@@ -0,0 +1,5 @@
+// @declaration: true
+
+let abc: "AB\r\nC" = `AB
+C`;
+let de_NEWLINE_f: "DE\nF" = `DE${"\n"}F`;