Introduces sorting capabilities within the Redner substitution

Note that we implemented sorting functionality and added unit tests.

The changes include:

• Creation of a new utility file utils/sorting.py implementing sorting functionalities such as : find_field_with_sort_order, parse_fields_with_sort_directions, and sortkey.
• Addition of a new file tests/test_sorting.py containing unit tests for sorting logic.

Associated odoo task

added 1 commit

• e9722140b5b8 - Introduces sorting capabilities within the Redner substitution

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assigned to @vincent.hatakeyama

merged

unassigned @vincent.hatakeyama