Android Documentation Layout

[jonpryor]

There is no way we are migrating over all of the Xamarin.Android documentation, which in turn means we can simplify the hierarchy significantly.

So what should things look like? 😁

I think we should take "spiritual guidance" from:

• the C# documentation tree: https://github.com/dotnet/docs/tree/f7b99d3c6b02350781b56a454356053787b7aa26/docs/csharp
• Entity Framework Core: https://learn.microsoft.com/en-us/ef/core/

Thus:

• .NET for Android
  • Welcome!
  • What's new in .NET for Android 8.0
  • Breaking Changes (if applicable) / To Be Aware Of (warnings which will become errors XA1039 for Android Support)
  • The plan for .NET for Android 9.0
  • Getting Started /
    • Installation
    • tour / dotnet new + build + install + run + Activity subclass
    • .NET for Android for Java developers
  • Releases /
    • 8.0, …
  • Features /
    • Bindings
    • Layout Code Behind
    • Slim Bindings
  • Building Apps /
    • Build Items
    • Build Properties
    • Build Targets
  • Message Reference /
  • Advanced Topics /
    • GC
    • JNI internals
  • Troubleshooting /
    • Debugging JNI Object References