feat(email-blast): perbarui tampilan dan logika pengiriman email blast

- Tambahkan pengambilan data penerima dari model Customer.
- Modifikasi konstruktor EmailBlastMail untuk menerima objek penerima.
- Perbarui tampilan email blast untuk menampilkan subjek dan nama penerima.
- Tambahkan styling baru untuk tampilan email agar lebih menarik.

app/Mail/EmailBlastMail.php

@@ -12,10 +12,12 @@ class EmailBlastMail extends Mailable
     use Queueable, SerializesModels;
 
     public $emailBlastHistory;
+    public $recipient;
 
-    public function __construct(EmailBlastHistory $emailBlastHistory)
+    public function __construct(EmailBlastHistory $emailBlastHistory, $recipient)
     {
         $this->emailBlastHistory = $emailBlastHistory;
+        $this->recipient = $recipient;
     }
 
     public function build()
@@ -23,7 +25,9 @@ class EmailBlastMail extends Mailable
         return $this->subject($this->emailBlastHistory->subject)
                     ->view('webstatement::emails.blast')
                     ->with([
-                        'content' => $this->emailBlastHistory->content
+                        'content' => $this->emailBlastHistory->content,
+                        'subject' => $this->emailBlastHistory->subject,
+                        'recipient' => $this->recipient->name,
                     ]);
     }
 }