feat(ui/templates): new-folder, new-template, move-template dialogs

src/ScadaLink.TemplateEngine/TemplateService.cs

@@ -30,6 +30,7 @@ public class TemplateService
         string? description,
         int? parentTemplateId,
         string user,
+        int? folderId = null,
         CancellationToken cancellationToken = default)
     {
         if (string.IsNullOrWhiteSpace(name))
@@ -46,7 +47,8 @@ public class TemplateService
         var template = new Template(name)
         {
             Description = description,
-            ParentTemplateId = parentTemplateId
+            ParentTemplateId = parentTemplateId,
+            FolderId = folderId
         };
 
         // Check acyclicity (inheritance) — for new templates this is mostly a parent-exists check,