refactor: reorder SetSource params — URLs first

SetSource(updateUrl, appSecretKey, reportUrl?, scheme?, token?)

Three URL-related params near the front, consumer code uses clean
positional args without named parameters.

Author: JusterZhu

src/c#/GeneralUpdate.Core/Bootstrap/GeneralUpdateBootstrap.cs

@@ -285,9 +285,9 @@ public GeneralUpdateBootstrap SetConfig(string filePath)
     public GeneralUpdateBootstrap SetSource(
         string updateUrl,
         string appSecretKey,
-        string? token = null,
+        string? reportUrl = null,
         string? scheme = null,
-        string? reportUrl = null)
+        string? token = null)
     {
         var config = new Configinfo
         {

tests/ClientTest/Program.cs

@@ -21,7 +21,7 @@
     // Identity metadata (MainAppName, ClientVersion, UpdateAppName, UpdatePath, …)
     // is auto-discovered from generalupdate.manifest.json (generated by GeneralUpdate.Tools).
     await new GeneralUpdateBootstrap()
-        .SetSource(updateUrl, appSecretKey, reportUrl: reportUrl)
+        .SetSource(updateUrl, appSecretKey, reportUrl)
         .Option(UpdateOptions.AppType, AppType.Client)
         .Hooks<ClientTestHooks>()
         .AddListenerMultiDownloadStatistics(OnDownloadStatistics)