Create a new instance of `LoaderCache`

```js
var LoaderCache = require('loader-cache');
var loaders = new LoaderCache();
```
@api public
function LoaderCache(options) {
  if (!(this instanceof LoaderCache)) {
    return new LoaderCache(options);
  }
  this.options = options || {};
  this.defaultType = this.options.defaultType || 'sync';
  this.types = [];
  this.decorate('resolve');
  this.decorate('get');
}