Grant access to repos from teams

While other bots do this already (i.e., SafeSettings), it would be beneficial for this bot to include such functionality as well. After all, users of this bot may not be using others **and** assigning teams access to repositories falls under the purview of "syncing teams."

## Decision Points

- [ ] Repo name property- should it just be `Name`, or `Name` and `NamePattern`?
- Leaving it as "Name" makes consumption easier though increases development. Most likely that is worth it- make the consumer experience great.

## Schema Options

```yaml
Teams:
- Name: Some_Team
Repos:
# Pattern matching can be done, though specific technique must be chosen and documented.
- NamePattern: SomeName-*
Permission: Write
- Name: SomeSpecificRepo
Permission: Admin
```

No se nombran archivos, pruebas ni puntos de entrada. Empieza rastreando la configuración existente de team-sync y el manejo de permisos de repositorios; después, determina si los repositorios usan Name, NamePattern o ambos, y cómo se documenta la coincidencia de patrones. Se considera terminado cuando el acceso del equipo a los repositorios, incluidos los permisos solicitados, puede representarse y sincronizarse de forma coherente.

Escrito por el modelo de indexación a partir del texto del issue.