Resolve "Show modal with information about premium when clicking on a disabled feature"

This merge request introduces a simple modal when the user clicks on a deactivated (premium) feature. The modal briefly explains what the premium version version and a link to the pricing page.

Testing pointers

• Clicking on a kanban view, row coloring, row comments and additional exports should show the modal.
• The admin links should not show a modal because that hasn't been implemented yet.
• When the user has access to the premium version, it should not show a modal and a lock icon.
• Clicking on an already created view or row coloring should show the same modal.

Merge Request Checklist

• changelog.md has been updated if required
• New/updated Premium features are separated correctly in the premium folder
• The latest Chrome and Firefox have been used to test any new frontend features
• Documentation has been updated
• Quality Standards are met
• Performance: tables are still fast with 100k+ rows, 100+ field tables
• The redoc API pages have been updated for any REST API changes
• Our custom API docs are updated for changes to endpoints accessed via api tokens
• The UI/UX has been updated following UI Style Guide

Closes #1066 (closed)