Generate C# bindings via code generation based on the core F# API

Description

We basically have 2 options here:

(1) Reflection-based F# code generation project

A WIP of this approach can be found on the csharp-object-bindings branch, which is severely out of date, so it might be best to just initialize a new project in the current repo and copy the files over.

The gist is that a well-defined string template for csharp source files is populated based on reflection-based runtime inspection of the F# types, functions and methods.

(2) C# incremental/source generators

here I have no domain knowledge at all, and all tutorials look like pure arcane glyphs to me. I think source generators are now called incremental generators. I think they are aiming to do what we need. I have absolutely no idea how to do this though. If we go this way, we need an experienced C# dev on it.

https://github.com/dotnet/roslyn/blob/main/docs/features/incremental-generators.md

Start by reviewing the outdated csharp-object-bindings branch, especially src/Plotly.NET.Codegen, and compare its reflection-based approach with the linked Roslyn incremental generators documentation. The issue needs an approach selected and a current-repository implementation that generates C# bindings from the core F# API; its exact completion criteria are not defined.