Document building AOT-compatible libraries

**Help us make content visible**

We should add documentation for building libraries that are compatible with AOT deployment. @LakshanF added an article describing AOT deployment in https://github.com/dotnet/docs/pull/29792.

**Describe the new article**

The content should describe the options developers should use in their project file to turn on analyzers that provide AOT-compatibility warnings. The current way to do this is:
```xml
true
true
true
```
The article should go somewhere under https://docs.microsoft.com/dotnet/core/deploying, maybe under a new Native AOT section that also contains https://docs.microsoft.com/dotnet/core/deploying/native-aot.