Link tenant packages to events and show usage in billing

app/Models/TenantPackage.php

@@ -6,6 +6,7 @@ use Carbon\CarbonInterface;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\HasMany;
 
 class TenantPackage extends Model
 {
@@ -47,6 +48,11 @@ class TenantPackage extends Model
         return $this->belongsTo(Package::class)->withTrashed();
     }
 
+    public function eventPackages(): HasMany
+    {
+        return $this->hasMany(EventPackage::class);
+    }
+
     public function isActive(): bool
     {
         if ($this->package && $this->package->isEndcustomer()) {