Add Varbase AI Context recipe as an optional recipe to Varbase AI Base recipe

Problem/Motivation

#3589350: Initialize Varbase AI Context recipe

Proposed resolution

• Add drupal/varbase_ai_context ~1.0 || 1.0.x-dev to the composer.json file.
• Have it as an optional recipe .

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
• ➖ UX/UI designer responsibilities
• ➖ 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
• ❌ Release varbase-11.0.0-beta1, varbase_starter-1.0.0-beta1, varbase_ai_base-1.0.0-beta1

User interface changes

• N/A

API changes

• N/A

Data model changes

• N/A

Release notes snippet

• feat: #3589355 Add Varbase AI Context recipe as an optional recipe to Varbase AI Base recipe