Add Support for String-Based "All" Option in availableRowsPerPage

[soufianebenyaala]

Description:

Currently, the availableRowsPerPage property in DataTable2 only supports List. It would be beneficial to extend this to support string-based options, such as including an "All" option, allowing users to easily view all rows in the table.

Proposed Feature:

Allow availableRowsPerPage to accept List or List values or make it Map<String, int> _availableRowsPerPageMap = {
'2': 2,
'5': 5,
'10': 10,
'30': 30,
'100': 100,
'All': 65546, // "All" corresponds to all rows
}; .
Provide a built-in "All" option as a standard feature to display all rows.
Map string options to integer values internally, e.g., "All" could correspond to -1 or the total row count.

Benefits:

Enhances user experience by making row selection more intuitive.
Eliminates the need for custom implementations in each project.
Keeps the library flexible and user-friendly for developers who need more options.