This update introduces sample data for the Swiss HR Payroll Localization, making it easier to test and showcase the payroll functionality. The demo includes company and employee details, along with a year's worth of payslips, allowing for demonstration and verification of the Swiss payroll process.

This commit adds demo data for the Swiss HR Payroll Localization to facilitate testing and demonstration of Swiss payroll.

The demo data includes the company setup, employee with relevant details, and 1 year of payslip history for that employee.

Task: 5870506