Add descriptions for endpoints for use in openapi

src/Vegasco.Server.Api/Consumptions/GetConsumption.cs

@@ -11,6 +11,7 @@ public static class GetConsumption
 		return builder
 			.MapGet("consumptions/{id:guid}", Endpoint)
 			.WithTags("Consumptions")
+			.WithDescription("Returns a single consumption entry by ID")
 			.Produces<Response>()
 			.Produces(404);
 	}