Configures telemetry using external file

Reads telemetry configuration parameters such as hostname, port, and CA certificate from an external JSON file.
This decouples configuration from code, allowing for easier updates and management of telemetry settings.

Source/ProofOfConcept/Models/ValidationModel.cs

@@ -0,0 +1,10 @@
+using System.Text.Json.Serialization;
+
+namespace ProofOfConcept.Models;
+
+public class ValidationModel
+{
+    [JsonPropertyName("hostname")] public string HostName { get; set; } = "";
+    [JsonPropertyName("port")] public ushort Port { get; set; } = 443;
+    [JsonPropertyName("ca")] public string CA { get; set; } = "";
+}