feat(authorization): add roles and permissions models, migration, and tests

app/Domains/Authorization/Models/RolePermission.php

@@ -0,0 +1,32 @@
+<?php
+
+namespace App\Domains\Authorization\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+class RolePermission extends Model
+{
+    protected $table = 'roles_permisos';
+
+    protected $fillable = [
+        'codigo_permiso',
+        'rol_codigo',
+    ];
+
+    /**
+     * @return BelongsTo<Permission, $this>
+     */
+    public function permission(): BelongsTo
+    {
+        return $this->belongsTo(Permission::class, 'codigo_permiso', 'codigo');
+    }
+
+    /**
+     * @return BelongsTo<Role, $this>
+     */
+    public function role(): BelongsTo
+    {
+        return $this->belongsTo(Role::class, 'rol_codigo', 'codigo');
+    }
+}