No generic factories

```
@AutoFactory
class Foo {
Foo(@Provided Bar bar, Baz baz) {...}
}
```

turns into

```
class FooFactory {
...
Foo create(Baz baz) {
return new Foo(...);
}
}
```

where the generic parameter `T` is missing from the class declaration, the create() method return value type, and the Foo constructor call.