Add quickfix for missing use block on lambdas

Example bad code:

```hack
function foo(): void {
$x = 1;
$f = function() {
return $x;
};
}
```

The quickfix should add the `use` (if not already present), and the extra variable.

```hack
function foo(): void {
$x = 1;
$f = function() use ($x) {
return $x;
};
}
```

No files, tests, or entry points are named. Start by locating the Hack lambda quickfix implementation and its tests, then verify handling for lambdas without a use block, lambdas with an existing use block, and the required captured variable; done means the examples receive the requested quickfix.

Written by the indexing model from the issue text.