Moodle 4.4 compatibility

[renne]

According to https://moodle.org/plugins/mod_hvp/versions this plugin is compatible up to Moodle 4.3.
Please add Moodle 4.4 support.

[scoriess]

Hello there,

Thank your for the great plugin. We have a couple of customers who have been using the plugin and who would also be very happy if it would support Moodle 4.4.

[julien-garrigue]

please make this plugin compatible for Moodle 4.4.
Thanks

[julien-garrigue]

@icc @thomasmars @falcon-git @lucaboesch @davidherney