Initial setup of environment service

Environment/Service/Message.cs

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+using System.Text.Json.Serialization;
+
+namespace ChrisKaczor.HomeMonitor.Environment.Service;
+
+public class Message
+{
+    [JsonPropertyName("model")]
+    public required string Model { get; set; }
+
+    [JsonPropertyName("nickname")]
+    public required string Name { get; set; }
+
+    [JsonPropertyName("readings")]
+    public required Readings Readings { get; set; }
+
+    [JsonPropertyName("timestamp")]
+    public required DateTimeOffset Timestamp { get; set; }
+
+    public decimal AirQualityIndex => Readings.AirQualityIndex;
+
+    public decimal ColorTemperature => Readings.ColorTemperature;
+
+    public decimal GasResistance => Readings.GasResistance;
+
+    public decimal Humidity => Readings.Humidity;
+
+    public decimal Luminance => Readings.Luminance;
+
+    public decimal Pressure => Readings.Pressure;
+
+    public decimal Temperature => Readings.Temperature;
+}