Refactored ControllerExtensions: moved user claim extraction
methods from EnvelopeGenerator.API.Controllers to the new
EnvelopeGenerator.API.Extensions namespace. Updated all
references and using statements accordingly. No logic changes;
improves code organization and clarity.
Replaced all EnvelopeGenerator.GeneratorAPI namespaces with EnvelopeGenerator.API across controllers, models, extensions, middleware, and annotation-related files. Updated using/import statements and namespace declarations accordingly. Added wwwroot folder to project file. Minor code adjustments made for consistency. This unifies API naming for improved clarity and maintainability.
Deleted dotnet-tools.json (dotnet-ef config) and IIS publish profiles for .NET 7 and .NET 9 (IISProfileNet7Win64.pubxml, IISProfileNet9Win64.pubxml) to clean up unused deployment and tooling files.
