Adds Tesla API integration

Adds an endpoint to interact with the Tesla API via a command proxy.

This includes fetching vehicle information and configuring telemetry settings. It introduces new models to represent the Tesla API responses and request structures.

Source/ProofOfConcept/Models/TelemetryConfigRequest.cs

@@ -0,0 +1,33 @@
+using System.Text.Json.Serialization;
+
+namespace ProofOfConcept.Models;
+
+public sealed class TelemetryConfigRequest
+{
+    [JsonPropertyName("vins")]
+    public List<string> Vins { get; set; } = new();
+
+    [JsonPropertyName("config")]
+    public TelemetryConfig Config { get; set; } = new();
+}
+
+public sealed class TelemetryConfig
+{
+    [JsonPropertyName("hostname")]
+    public string Hostname { get; set; } = string.Empty;
+
+    [JsonPropertyName("port")]
+    public int Port { get; set; }
+
+    [JsonPropertyName("ca")]
+    public string CertificateAuthority { get; set; } = string.Empty;
+
+    [JsonPropertyName("fields")]
+    public Dictionary<string, TelemetryFieldConfig> Fields { get; set; } = new();
+}
+
+public sealed class TelemetryFieldConfig
+{
+    [JsonPropertyName("interval_seconds")]
+    public int IntervalSeconds { get; set; }
+}