feat: add provider model and bridging schemas

app/Models/RequestLog.php

@@ -272,6 +272,11 @@ class RequestLog extends Model
         return $this->belongsTo(Service::class, 'service_code', 'code');
     }
 
+    public function plan()
+    {
+        return $this->belongsTo(Plan::class, 'plan_id');
+    }
+
     public function requestLogBenefits()
     {
         return $this->hasMany(RequestLogBenefit::class, 'request_log_id');