Add localization and UI updates for receiver actions

Added new localized strings for "Recently used recipients" and
"Skip" in German, English, and French resource files. Updated
the `CreateEnvelopeWizardPopup.razor` to enhance the "Add
Receiver" button with a primary render style and a new CSS
class. Introduced styles for the button in `sender-page.css`
to improve its appearance with a minimum width, bold font,
and box shadow.

EnvelopeGenerator.Application/Resources/Resource.de-DE.resx

@@ -567,6 +567,12 @@
   <data name="AddReceiver" xml:space="preserve">
     <value>Empfänger hinzufügen</value>
   </data>
+  <data name="SenderWizard_RecentReceivers" xml:space="preserve">
+    <value>Zuletzt verwendete Empfänger</value>
+  </data>
+  <data name="Skip" xml:space="preserve">
+    <value>Überspringen</value>
+  </data>
   <data name="DeleteReceiver" xml:space="preserve">
     <value>Empfänger löschen</value>
   </data>

EnvelopeGenerator.Application/Resources/Resource.en-US.resx

@@ -567,6 +567,12 @@
   <data name="AddReceiver" xml:space="preserve">
     <value>Add Receiver</value>
   </data>
+  <data name="SenderWizard_RecentReceivers" xml:space="preserve">
+    <value>Recently used recipients</value>
+  </data>
+  <data name="Skip" xml:space="preserve">
+    <value>Skip</value>
+  </data>
   <data name="DeleteReceiver" xml:space="preserve">
     <value>Delete Receiver</value>
   </data>

EnvelopeGenerator.Application/Resources/Resource.fr-FR.resx

@@ -567,6 +567,12 @@
   <data name="AddReceiver" xml:space="preserve">
     <value>Ajouter un destinataire</value>
   </data>
+  <data name="SenderWizard_RecentReceivers" xml:space="preserve">
+    <value>Destinataires recents</value>
+  </data>
+  <data name="Skip" xml:space="preserve">
+    <value>Passer</value>
+  </data>
   <data name="DeleteReceiver" xml:space="preserve">
     <value>Supprimer le destinataire</value>
   </data>

EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Components/Sender/CreateEnvelopeWizardPopup.razor

@@ -155,7 +155,8 @@
 
                 <div class="sender-create-wizard__receiver-actions">
                     <DxButton Text='@L("AddReceiver", "Empfänger hinzufügen")'
-                              RenderStyle="ButtonRenderStyle.Secondary"
+                              RenderStyle="ButtonRenderStyle.Primary"
+                              CssClass="sender-create-wizard__add-receiver-btn"
                               Click="AddReceiver"
                               Enabled="@(!IsActionLocked)" />
                 </div>

EnvelopeGenerator.Server/EnvelopeGenerator.Server/wwwroot/css/sender-page.css

@@ -1271,6 +1271,12 @@
     justify-content: flex-end;
 }
 
+.sender-create-wizard__add-receiver-btn.dxbl-btn {
+    min-width: 210px;
+    font-weight: 700;
+    box-shadow: 0 8px 18px rgba(14, 116, 144, 0.22);
+}
+
 .sender-create-wizard__suggestions {
     display: flex;
     flex-direction: column;