Upgrade GPS Tracker to dotnet 9 and add Aspire orchestration

[egil]

This upgrades the sample to dotnet 9 and adds Aspire orchestration.

However, we may want to use something else than the Aspire dashboard to view the telemetry, as it runs into problems due to the amount of telemetry being produced.

It would also be nice to change the default url such that when you click on the service's url in the dashboard, it takes you to https://localhost:5001/index.html instead of https://localhost:5001.

Currently outputs the following error to the Aspire AppHost console:

fail: Aspire.Hosting.Dashboard.Grpc.AspNetCore.Server.ServerCallHandler[6]
      Error when executing service method 'Export'.
      Google.Protobuf.InvalidProtocolBufferException: While parsing a protocol message, the input ended unexpectedly in the middle of a field.  This could mean either that the input has been truncated or that an embedded message misreported its own length.
         at Google.Protobuf.SegmentedBufferHelper.RefillFromReadOnlySequence(ReadOnlySpan`1& buffer, ParserInternalState& state, Boolean mustSucceed)
         at Google.Protobuf.ParsingPrimitives.ParseRawVarint32SlowPath(ReadOnlySpan`1& buffer, ParserInternalState& state)
         at OpenTelemetry.Proto.Trace.V1.Status.pb::Google.Protobuf.IBufferMessage.InternalMergeFrom(ParseContext& input) in /_/artifacts/obj/Aspire.Dashboard/win-x64/Release/net8.0/win-x64/opentelemetry/proto/trace/v1/Trace.cs:line 2612
         at Google.Protobuf.ParsingPrimitivesMessages.ReadMessage(ParseContext& ctx, IMessage message)
         at OpenTelemetry.Proto.Trace.V1.Span.pb::Google.Protobuf.IBufferMessage.InternalMergeFrom(ParseContext& input) in /_/artifacts/obj/Aspire.Dashboard/win-x64/Release/net8.0/win-x64/opentelemetry/proto/trace/v1/Trace.cs:line 1642
         at Google.Protobuf.ParsingPrimitivesMessages.ReadMessage(ParseContext& ctx, IMessage message)
         at Google.Protobuf.Collections.RepeatedField`1.AddEntriesFrom(ParseContext& ctx, FieldCodec`1 codec)
         at OpenTelemetry.Proto.Trace.V1.ScopeSpans.pb::Google.Protobuf.IBufferMessage.InternalMergeFrom(ParseContext& input) in /_/artifacts/obj/Aspire.Dashboard/win-x64/Release/net8.0/win-x64/opentelemetry/proto/trace/v1/Trace.cs:line 844
         at Google.Protobuf.ParsingPrimitivesMessages.ReadMessage(ParseContext& ctx, IMessage message)
         at Google.Protobuf.Collections.RepeatedField`1.AddEntriesFrom(ParseContext& ctx, FieldCodec`1 codec)
         at OpenTelemetry.Proto.Trace.V1.ResourceSpans.pb::Google.Protobuf.IBufferMessage.InternalMergeFrom(ParseContext& input) in /_/artifacts/obj/Aspire.Dashboard/win-x64/Release/net8.0/win-x64/opentelemetry/proto/trace/v1/Trace.cs:line 560
         at Google.Protobuf.ParsingPrimitivesMessages.ReadMessage(ParseContext& ctx, IMessage message)
         at Google.Protobuf.Collections.RepeatedField`1.AddEntriesFrom(ParseContext& ctx, FieldCodec`1 codec)
         at OpenTelemetry.Proto.Collector.Trace.V1.ExportTraceServiceRequest.pb::Google.Protobuf.IBufferMessage.InternalMergeFrom(ParseContext& input) in /_/artifacts/obj/Aspire.Dashboard/win-x64/Release/net8.0/win-x64/opentelemetry/proto/collector/trace/v1/TraceService.cs:line 241
         at Google.Protobuf.MessageExtensions.MergeFrom(IMessage message, ReadOnlySequence`1 data, Boolean discardUnknownFields, ExtensionRegistry registry)
         at Google.Protobuf.MessageParser`1.ParseFrom(ReadOnlySequence`1 data)
         at OpenTelemetry.Proto.Collector.Trace.V1.TraceService.__Helper_DeserializeMessage[T](DeserializationContext context, MessageParser`1 parser) in /_/artifacts/obj/Aspire.Dashboard/win-x64/Release/net8.0/win-x64/opentelemetry/proto/collector/trace/v1/TraceServiceGrpc.cs:line 62
         at OpenTelemetry.Proto.Collector.Trace.V1.TraceService.<>c.<.cctor>b__13_0(DeserializationContext context) in /_/artifacts/obj/Aspire.Dashboard/win-x64/Release/net8.0/win-x64/opentelemetry/proto/collector/trace/v1/TraceServiceGrpc.cs:line 69
         at Grpc.AspNetCore.Server.Internal.PipeExtensions.ReadSingleMessageAsync[T](PipeReader input, HttpContextServerCallContext serverCallContext, Func`2 deserializer)
         at Grpc.AspNetCore.Server.Internal.CallHandlers.UnaryServerCallHandler`3.HandleCallAsyncCore(HttpContext httpContext, HttpContextServerCallContext serverCallContext)
         at Grpc.AspNetCore.Server.Internal.CallHandlers.ServerCallHandlerBase`3.<HandleCallAsync>g__AwaitHandleCall|8_0(HttpContextServerCallContext serverCallContext, Method`2 method, Task handleCall)

Granted, I may have made a mistake in the upgrade, but I cannot see where. @IEvangelist can you figure out what is going on here.