Initial setup of environment service

Environment/Service/Readings.cs

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+using System.Text.Json.Serialization;
+using JetBrains.Annotations;
+
+namespace ChrisKaczor.HomeMonitor.Environment.Service;
+
+[UsedImplicitly]
+public class Readings
+{
+    [JsonPropertyName("aqi")]
+    public decimal AirQualityIndex { get; set; }
+
+    [JsonPropertyName("color_temperature")]
+    public decimal ColorTemperature { get; set; }
+
+    [JsonPropertyName("gas_resistance")]
+    public decimal GasResistance { get; set; }
+
+    [JsonPropertyName("humidity")]
+    public decimal Humidity { get; set; }
+
+    [JsonPropertyName("luminance")]
+    public decimal Luminance { get; set; }
+
+    [JsonPropertyName("pressure")]
+    public decimal Pressure { get; set; }
+
+    [JsonPropertyName("temperature")]
+    public decimal Temperature { get; set; }
+}