Add initial password setup functionality: implement email sending for new account password setup and update user interface to include password setup button

Co-authored-by: Copilot <copilot@github.com>

FoodsharingSiegen.Server/Pages/Users.razor.cs

@@ -22,6 +22,12 @@ namespace FoodsharingSiegen.Server.Pages
         [Inject]
         public UserService UserService { get; set; } = null!;
 
+        [Inject]
+        public new FoodsharingSiegen.Server.Auth.AuthService AuthService { get; set; } = null!;
+
+        [Inject]
+        public new NavigationManager NavigationManager { get; set; } = null!;
+
         #endregion
 
         #region Private Properties
@@ -115,6 +121,14 @@ namespace FoodsharingSiegen.Server.Pages
             PasswordModal?.Show(user);
         }
 
+        private async Task SendPasswordSetupMail(User user)
+        {
+            await ConfirmDialog.ShowAsync(ModalService, "Bestätigen", $"Soll eine E-Mail zum Festlegen des Passworts an {user.Mail} gesendet werden?", async () =>
+            {
+                await AuthService.InitiateInitialPasswordSetup(user.Mail, NavigationManager.BaseUri);
+            });
+        }
+
         private async Task SaveUser()
         {
             if (EditModel == null) return;