Support for type annotating arrays using `string[]` syntax rather than `Array<string>`

```js
/** @type {string[]} */
// ^
// JSC_TYPE_PARSE_ERROR: Bad type annotation. expected closing }
const x = ["hi"];
```

This is supported in both TypeScript and JSDoc. It would be nice if closure supported this as well.

[Appspot demo](https://closure-compiler.appspot.com/home#code%3D%252F%252F%2520%253D%253DClosureCompiler%253D%253D%250A%252F%252F%2520%2540compilation_level%2520ADVANCED_OPTIMIZATIONS%250A%252F%252F%2520%2540output_file_name%2520default.js%250A%252F%252F%2520%253D%253D%252FClosureCompiler%253D%253D%250A%250A%252F%252F%2520ADD%2520YOUR%2520CODE%2520HERE%250A%252F**%2520%2540type%2520%257Bstring%255B%255D%257D%2520*%252F%250Aconst%2520x%2520%253D%2520%255B%2522hi%2522%255D%253B%250Aconsole.log(x)%253B%250A)