chore: Update module version to Odoo 19, make xlsxwriter an optional dependency, and add a .gitignore file.

.gitignore

@@ -0,0 +1,15 @@
+# Python
+*.py[cod]
+__pycache__/
+*.so
+
+# Odoo
+*.po~
+*.pot~
+
+# Editor / System
+.DS_Store
+.vscode/
+*.swp
+*.swo
+*~

__manifest__.py

@@ -1,7 +1,7 @@
 # -*- coding: utf-8 -*-
 {
     "name": "User Access Rights Export",
-    "version": "17.0.1.0.0",
+    "version": "19.0.1.0.0",
     "category": "Settings/Technical",
     "summary": "Export detailed user access rights (model ACLs and record rules) to Excel",
     "description": """

wizard/user_access_rights_wizard.py

@@ -6,7 +6,10 @@ from datetime import datetime
 
 from odoo import _, api, fields, models
 from odoo.exceptions import UserError
-from odoo.tools.misc import xlsxwriter
+try:
+    import xlsxwriter
+except ImportError:
+    xlsxwriter = None
 
 
 class UserAccessRightsWizard(models.TransientModel):