Add the deprecated Hypermedia Application Language (HAL) ~2.0 module for Drupal Core ~10.1.0 in the 9.1.x branch only for smoother upgrade process

Problem/Motivation

The Hypermedia Application Language (HAL) module was deprecated in Drupal ~9.0 and removed from Drupal ~10.0
Sites which are using the module, will face issues when upgrading to Drupal ~10, as the code base was removed from Core

• Recommendations for Deprecated Modules
• Recommendations for Obsolete Modules

Proposed resolution

• Add drupal/hal with ~2.0 in the composer.json file.

Remaining tasks

• ✅ File an issue about this project
• ✅ Addition/Change/Update/Fix to this project
• ✅ Testing to ensure no regression
• ➖ Automated unit/functional testing coverage
• ➖ Developer Documentation support on feature change/addition
• ➖ User Guide Documentation support on feature change/addition
• ➖ Accessibility and Readability
• ✅ Code review from 1 Varbase core team member
• ✅ Full testing and approval
• ✅ Credit contributors
• ✅ Review with the product owner
• ✅ Update Release Notes and Update Helper on new feature change/addition
• ✅ Release varbase-9.1.0, varbase_core-9.1.4

Varbase update type

• ✅ No Update
• ➖ Optional Update
• ➖ Forced Update
• ➖ Forced Update if Unchanged

User interface changes

• N/A

API changes

• N/A

Data model changes

• N/A

Release notes snippet

• Issue #3394277: Added the deprecated Hypermedia Application Language (HAL) ~2.0 module for Drupal Core ~10.1.0 in the 9.1.x branch only for smoother upgrade process