refactor: rename namespace to FiscalFlow and upgrade to .NET 10

- Rename InvoiceMaster.* to FiscalFlow.* namespace
- Upgrade from .NET 8 to .NET 10
- Update all NuGet packages to latest versions
- Update C# language version to 14.0

backend/tests/InvoiceMaster.IntegrationTests/obj/Debug/net8.0/InvoiceMaster.IntegrationTests.AssemblyInfo.cs

@@ -13,7 +13,7 @@ using System.Reflection;
 [assembly: System.Reflection.AssemblyCompanyAttribute("InvoiceMaster.IntegrationTests")]
 [assembly: System.Reflection.AssemblyConfigurationAttribute("Debug")]
 [assembly: System.Reflection.AssemblyFileVersionAttribute("1.0.0.0")]
-[assembly: System.Reflection.AssemblyInformationalVersionAttribute("1.0.0")]
+[assembly: System.Reflection.AssemblyInformationalVersionAttribute("1.0.0+05ea67144f6a97e372ca4293ce2393e15a3f6bb7")]
 [assembly: System.Reflection.AssemblyProductAttribute("InvoiceMaster.IntegrationTests")]
 [assembly: System.Reflection.AssemblyTitleAttribute("InvoiceMaster.IntegrationTests")]
 [assembly: System.Reflection.AssemblyVersionAttribute("1.0.0.0")]

backend/tests/InvoiceMaster.IntegrationTests/obj/Debug/net8.0/InvoiceMaster.IntegrationTests.AssemblyInfoInputs.cache

@@ -1 +1 @@
-4ff6b6dee96a237c7f1151ad71da35dcb3e74f9eea901c8b90ca03158f320f75
+31d76ac4a5e097dcc768e4f6d85865324f880be67000d8fa9ccb0b8773e2b9d3