Support Drupal 10 and update all use of deprecations in the Smart IP - Language Detection and Negotiation Redirect module

Problem/Motivation

Drupal 10.0 development →

Drupal 10.0.0-alpha2 was released on 18 Feb 2022 by xjm →
https://www.drupal.org/project/drupal/releases/10.0.0-alpha2 →

Drupal 10.0.0-alpha3 was released on 14 Apr 2022 by xjm →
https://www.drupal.org/project/drupal/releases/10.0.0-alpha3 →

Proposed resolution

• Support Drupal ~10 and change all deprecated packages, classes, functions, asset libraries to the Drupal 10 way
• Real physical testing with Drupal ~10
• Automated upgrade to Drupal ~10

Remaining tasks

• ✅ File an issue
• ➖ Addition/Change/Update/Fix
• ➖ Testing to ensure no regression
• ➖ Automated unit testing coverage
• ➖ Automated functional testing coverage
• ➖ UX/UI designer responsibilities
• ➖ Readability
• ➖ Accessibility
• ➖ Performance
• ➖ Security
• ➖ Documentation
• ➖ Code review by maintainers
• ➖ Full testing and approval
• ➖ Credit contributors
• ➖ Review with the product owner
• ➖ Release notes snippet
• ❌ Release

API changes

• N/A

Data model changes

• N/A

Release notes snippet

• N/A