Allow phpdox to run under PHP 8.1 and PHP 8.2

Summary:
A nasqueron/phpdox temporary fork has been prepared to allow phpdox
to run without deprecation issues under both PHP 8.1 and PHP 8.2.

Ref T1731

Test Plan: Run CI job for rNOTIF

Reviewers: dereckson

Reviewed By: dereckson

Subscribers: DorianWinty

Maniphest Tasks: T1731

Differential Revision: https://devcentral.nasqueron.org/D2922