Elite Tracker: Add HTTPS tracker option (#3217)

* Add option for Elite Tracker (FR) for download torrent using https for tracker URL.

* change return type.
clean code.

* use the SiteLink variable instead of hard coding

src/Jackett.Common/Models/IndexerConfig/Bespoke/ConfigurationDataEliteTracker.cs

@@ -0,0 +1,13 @@
+namespace Jackett.Common.Models.IndexerConfig.Bespoke
+{
+    class ConfigurationDataEliteTracker : ConfigurationDataBasicLogin
+    {
+        public BoolItem TorrentHTTPSMode { get; private set; }
+
+        public ConfigurationDataEliteTracker()
+            : base()
+        {
+            TorrentHTTPSMode = new BoolItem { Name = "Use https for tracker URL (Experimental)", Value = false };
+        }
+    }
+}