refactor: rename Api project to Web

- HrynCo.NotificationService.Api -> HrynCo.NotificationService.Web
- HrynCo.NotificationService.Api.IntegrationTests -> HrynCo.NotificationService.Web.IntegrationTests
- Updated slnx, docker-compose, project references, and namespaces
- Project serves both REST API and admin UI

Ref: IT-628

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

HrynCo.NotificationService.Web/Dockerfile

@@ -0,0 +1,32 @@
+# syntax=docker/dockerfile:1.4
+
+FROM mcr.microsoft.com/dotnet/aspnet:10.0 AS base
+WORKDIR /app
+EXPOSE 8080
+
+FROM mcr.microsoft.com/dotnet/sdk:10.0 AS build
+ARG BUILD_CONFIGURATION=Release
+WORKDIR /src
+
+COPY ["Directory.Build.props", "."]
+COPY ["Directory.Packages.props", "."]
+COPY ["HrynCo.NotificationService.DAL.Abstract/HrynCo.NotificationService.DAL.Abstract.csproj", "HrynCo.NotificationService.DAL.Abstract/"]
+COPY ["HrynCo.NotificationService.DAL.EF/HrynCo.NotificationService.DAL.EF.csproj", "HrynCo.NotificationService.DAL.EF/"]
+COPY ["HrynCo.NotificationService.Services/HrynCo.NotificationService.Services.csproj", "HrynCo.NotificationService.Services/"]
+COPY ["HrynCo.NotificationService.Api/HrynCo.NotificationService.Api.csproj", "HrynCo.NotificationService.Api/"]
+
+RUN dotnet restore "HrynCo.NotificationService.Api/HrynCo.NotificationService.Api.csproj"
+
+COPY . .
+
+WORKDIR "/src/HrynCo.NotificationService.Api"
+RUN dotnet build "./HrynCo.NotificationService.Api.csproj" -c $BUILD_CONFIGURATION -o /app/build
+
+FROM build AS publish
+ARG BUILD_CONFIGURATION=Release
+RUN dotnet publish "./HrynCo.NotificationService.Api.csproj" -c $BUILD_CONFIGURATION -o /app/publish /p:UseAppHost=false
+
+FROM base AS final
+WORKDIR /app
+COPY --from=publish /app/publish .
+ENTRYPOINT ["dotnet", "HrynCo.NotificationService.Api.dll"]