Feature/145 protobuf streaming

[TimPurdum]

Closes #145

This is a large step forward in serializing graphics to JavaScript.

• On the C# side we use the protobuf-net nuget package to annotate our GraphicSerializationRecord type and serialize it to a DotNetStreamReference
• On the JS side we use protobuf.js npm package and a JSON type definition file to deserialize the graphics
• All AddGraphics calls are chunked, and there is a default and user-controllable chunk size.
• The logic is branched on the Blazor model
  • WASM in .NET 7 uses the synchronous JSImport methods instead of async calls
  • Server and MAUI launch multiple tasks for parallel work

[TimPurdum]

Also in this PR, I moved all the Parent.RegisterChildComponent registrations to earlier in the Blazor life cycle, which avoids this happening on every render. There were some features that depended on this happening after render, however, such as registering layers and graphics from Markup, so you will see a new pattern in those places that register first, then render on the next OnAfterRenderAsync.