Dotnet 8 compatibility and resolving vulnerability warnings

[HugoVG]

The Library is now compatible with .NET 8 (and .NET 6).

• Removed large dependency on Microsoft.AspNetCore.Components.WebAssembly package in favour of smaller Abstractions packages, this also fixed the warning people would get using dotnet 9 that says that multiple packages including System.Text.Json are vulnerable.
• Changed various internal code style to be more consistent with .NET 8 standards (only syntax no breaking changes).
• Fixed some typos in documentation.

fixes #15