Drupal 11 compatibility

I reviewed this there are some issues related to Facets → Module, as it is not converted to Drupal 11 yet.

Thanks
Samit K.

Applies cleanly and upgrade status under Drupal 10.3 goes green and test install on a Drupal 11 test installation was without flawa. Regarding the scope of this issue RTBC from here +1

Apply this MR for D11 now with:

...
    "repositories": {
        "https://packages.drupal.org/8": {
            "canonical": false,
            "type": "composer",
            "url": "https://packages.drupal.org/8"
        },
        "https://drupal.org/node/3454104": {
            "canonical": false,
            "type": "vcs",
            "url": "https://git.drupalcode.org/issue/select2-3454104.git"
        },
    },
...
    "require": {
        "drupal/select2": "dev-3454104-drupal-11-compatibility",
    }
...

Merged with https://www.drupal.org/node/3211796 →

Tests are all failing. Far away from done...