symlinks in vscode extension

The vscode extension does not work with symlinked folders, while it does it properly with the target.
For example, given this config:

```js
module.exports = {
schema: 'schemas/schema.graphql',
src: 'views',
};
```

Any file inside the folder `views` containing `graphql` tag is properly showing intellisense, but it does not when `views` is a symlink to `foo`. The structure looks like:

```text
root folder/
├─ assets/
├─ ...
├─ schemas/
├─ views/ <== works if not symlinked to *foo"
│ ├─ Component1
│ └─ Component2
└─ foo/
├─ Component1
└─ Component2
```

The `relay-compiler` does understand and properly works with the symlinked folder, but the extension it does not.