Versioning tooling that render TypeSpec snapshot of a given version

There is 2 part to this:
```[tasklist]
- [ ] Functionality
- [ ] Ability to show in IDE directly
```

## Example

- Spec
```tsp
model Foo {
name: string;

@added(Versions.v2)
age: int32;
}

model Bar {
other: T;
}
```
- Potential views
```tsp
// v1
model Foo is Bar {
name: string;
}
```

```tsp
// v1
model Foo is Bar { // we keep the code as much as it was as possible, keeping template calls, model is, op is, etc.)
name: string;

age: int32;
}
```