Fix models in environment service and add more SignalR messaging

Environment/Service/Models/ReadingsGrouped.cs

@@ -1,25 +1,35 @@
 using JetBrains.Annotations;
+using System.Text.Json.Serialization;
 
 namespace ChrisKaczor.HomeMonitor.Environment.Service.Models;
 
 [PublicAPI]
 public class ReadingsGrouped
 {
+    [JsonPropertyName("bucket")]
     public DateTimeOffset Bucket { get; set; }
 
+    [JsonPropertyName("name")]
     public string? Name { get; set; }
 
+    [JsonPropertyName("averageTemperature")]
     public decimal AverageTemperature { get; set; }
 
+    [JsonPropertyName("averagePressure")]
     public decimal AveragePressure { get; set; }
 
+    [JsonPropertyName("averageHumidity")]
     public decimal AverageHumidity { get; set; }
 
+    [JsonPropertyName("averageLuminance")]
     public decimal AverageLuminance { get; set; }
 
+    [JsonPropertyName("averageGasResistance")]
     public decimal AverageGasResistance { get; set; }
 
+    [JsonPropertyName("averageColorTemperature")]
     public decimal AverageColorTemperature { get; set; }
 
+    [JsonPropertyName("averageAirQualityIndex")]
     public decimal AverageAirQualityIndex { get; set; }
 }