return commands on login page

src/App/Pages/Accounts/LoginPage.xaml

@@ -56,7 +56,9 @@
                         StyleClass="box-value"
                         IsPassword="{Binding ShowPassword, Converter={StaticResource inverseBool}}"
                         Grid.Row="1"
-                        Grid.Column="0" />
+                        Grid.Column="0"
+                        ReturnType="Go"
+                        ReturnCommand="{Binding LogInCommand}" />
                     <controls:FaButton
                         StyleClass="box-row-button, box-row-button-platform"
                         Text="{Binding ShowPasswordIcon}"

src/App/Pages/Accounts/LoginPage.xaml.cs

@@ -13,6 +13,9 @@ namespace Bit.App.Pages
             _vm = BindingContext as LoginPageViewModel;
             _vm.Page = this;
             MasterPasswordEntry = _masterPassword;
+
+            _email.ReturnType = ReturnType.Next;
+            _email.ReturnCommand = new Command(() => _masterPassword.Focus());
         }
 
         public Entry MasterPasswordEntry { get; set; }

src/App/Pages/Accounts/LoginPageViewModel.cs

@@ -31,6 +31,7 @@ namespace Bit.App.Pages
 
             PageTitle = AppResources.Bitwarden;
             TogglePasswordCommand = new Command(TogglePassword);
+            LogInCommand = new Command(async () => await LogInAsync());
         }
 
         public bool ShowPassword
@@ -55,6 +56,7 @@ namespace Bit.App.Pages
             set => SetProperty(ref _masterPassword, value);
         }
 
+        public Command LogInCommand { get; }
         public Command TogglePasswordCommand { get; }
         public string ShowPasswordIcon => ShowPassword ? "" : "";
         public bool RememberEmail { get; set; }