Solution cleanup. Implement stubs for all remaining services. Add API models. Move configuration to appsettings.

src/Services/IndividualPopService.cs

@@ -0,0 +1,13 @@
+using MariesWonderland.Proto.IndividualPop;
+using Google.Protobuf.WellKnownTypes;
+using Grpc.Core;
+
+namespace MariesWonderland.Services;
+
+public class IndividualPopService : MariesWonderland.Proto.IndividualPop.IndividualpopService.IndividualpopServiceBase
+{
+    public override Task<GetUnreadPopResponse> GetUnreadPop(Empty request, ServerCallContext context)
+    {
+        return Task.FromResult(new GetUnreadPopResponse());
+    }
+}