feat: added implementation of HeadHunter hook for user registration

JOBot.Backend/Infrastructure/Config/HeadHunterConfig.cs

@@ -0,0 +1,18 @@
+namespace JOBot.Backend.Infrastructure.Config;
+
+public class HeadHunterConfig
+{
+    public const string SectionName = "HeadHunter";
+    public required HeadHunterLinksConfig Links { get; init; }
+    public required string ClientId { get; init; }
+    public required string Secret { get; init; }
+
+    public class HeadHunterLinksConfig
+    {
+        public required string AuthLink { get; init; }
+        public required string HookDomain { get; init; }
+        public required string HookRoute { get; init; }
+        public required string HeadHunterApiDomain { get; init; }
+        public required string HeadHunterTokenRoute { get; init; }
+    }
+}