Linter System addition Show diagnostic in library at point of usage

https://gist.github.com/timotheeguerin/95d4eea064ccfa0db64d9bf90e1597a6

```
model Foo {
bar: Foo; // Would complain here because Bar is having issues
}

// in ./node_modules/my-lib/lib.tsp
model Bar {
// warn same name as enclosing model
bar: string;
}
```

Note that this might be actually not necessarly be an issue with the linter only but with any diagnostics in general