Add to the Webshare module the ability to manage social share buttons (add, edit, delete)

Problem/Motivation

Currently, the Webshare module has fixed social share buttons without the flexibility to add, edit, or remove them. This limits customization for site builders who want to adapt the sharing options to their needs.

Proposed resolution

• Add a feature to allow creating a new custom social share button.
• Provide the ability to edit existing buttons.
• Provide the ability to delete old buttons

Remaining tasks

• ✅ File an issue
• ✅ Addition/Change/Update/Fix
• ✅ Merge request, Patch, or Commit
• ✅ 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 webshare 1.0.0 →

User interface changes

• N/A

API changes

• N/A

Data model changes

• N/A

Release notes snippet

• N/A