[Enhancement] Strong Name assemblies

## Summary
Consider strong naming `Microsoft.Maui.*` and including the `snk` in the repo.

I understand this wasn't an option on Xamarin but would this be an option on MAUI?

After all, this [is the official library authoring guideline](https://docs.microsoft.com/en-ca/dotnet/standard/library-guidance/strong-naming#create-strong-named-net-libraries) from .NET:

> ✔️ CONSIDER strong naming your library's assemblies.

> ✔️ CONSIDER adding the strong naming key to your source control system.

```
CSC : error CS8002: Referenced assembly 'Microsoft.Maui, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' does not have a strong name.
```