Welcome! Today, we’re diving into an exciting project that involves managing employee records within a company. Specifically, we’ll use nested hashes and arrays in Ruby to add projects and tasks for employees and retrieve those tasks as needed. This exercise will help you understand how to manipulate nested data structures effectively in Ruby.

We'll implement three methods in our EmployeeRecords class:

• add_project(employee_id, project_name) - Adds a new project to an employee's list of projects. If the project already exists for that employee, the method returns false. Otherwise, it adds the project and returns true.
• add_task(employee_id, project_name, task) - Adds a new task to a specified project for an employee. If the project does not exist for that employee, the method returns false. If the task is added successfully, it returns true.
• get_tasks(employee_id, project_name) - Retrieves all tasks for a specified project of an employee. If the project does not exist for that employee, the method returns nil. Otherwise, it returns the list of tasks.