refactor: replace custom CRM with Monica fork

app/Models/Account/ActivityStatistic.php

@@ -0,0 +1,39 @@
+<?php
+
+namespace App\Models\Account;
+
+use App\Models\Contact\Contact;
+use Illuminate\Database\Eloquent\Model;
+
+class ActivityStatistic extends Model
+{
+    protected $table = 'activity_statistics';
+
+    /**
+     * The attributes that are mass assignable.
+     *
+     * @var array<string>
+     */
+    protected $fillable = [
+        'account_id',
+        'contact_id',
+        'year',
+        'count',
+    ];
+
+    /**
+     * Get the account record associated with the activity statistic.
+     */
+    public function account()
+    {
+        return $this->belongsTo(Account::class);
+    }
+
+    /**
+     * Get the contact record associated with the activity statistic.
+     */
+    public function contact()
+    {
+        return $this->belongsTo(Contact::class);
+    }
+}