Add regression test

tests/cases/fourslash/completionListInImportClause05.ts

@@ -0,0 +1,17 @@
+/// <reference path='fourslash.ts' />
+
+// @Filename: app.ts
+//// import * as A from "[|/*1*/|]";
+
+// @Filename: /node_modules/@types/a__b/index.d.ts
+////declare module "@e/f" { function fun(): string; }
+
+// @Filename: /node_modules/@types/c__d/index.d.ts
+////export declare let x: number;
+
+const [replacementSpan] = test.ranges();
+verify.completionsAt("1", [
+    { name: "@a/b", replacementSpan },
+    { name: "@c/d", replacementSpan },
+    { name: "@e/f", replacementSpan },
+]);