feat&fix(add Listmonk service and sync part 1, fix association email on member sync)

app/Models/ListmonkMember.php

@@ -0,0 +1,40 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+/**
+ * @property int $id
+ * @property int $member_id
+ * @property int|null $listmonk_user_id
+ * @property array<array-key, mixed>|null $data
+ * @property \Illuminate\Support\Carbon|null $created_at
+ * @property \Illuminate\Support\Carbon|null $updated_at
+ * @property-read \App\Models\Member $member
+ *
+ * @mixin \Eloquent
+ */
+class ListmonkMember extends Model
+{
+    protected $table = 'listmonks_members';
+
+    protected $fillable = [
+        'member_id',
+        'listmonk_user_id',
+        'data',
+    ];
+
+    protected function casts(): array
+    {
+        return [
+            'data' => 'array',
+        ];
+    }
+
+    public function member(): BelongsTo
+    {
+        return $this->belongsTo(Member::class);
+    }
+}