Implement new replace menu UI

[smbea]

What should we do?

Implement new with new searchable replace menu UI according to #1627

Breakdown:

• Implement popupMenu with improved UI diagram-js#686
  • Support preact components - Add diagramJSui module diagram-js-ui#3
  • Allow to plug-in existing replace behaviors safely (feat(replace-menu): allow replacing with plain task bpmn-js-connectors-extension#34 (comment))
• Identified bugs:
  • feat(popup-menu): make search false by default diagram-js#699
  • Specialize popup menu classes (with prefix) diagram-js#703
  • Popup menu trigger action doesn't work for header entries diagram-js#695
  • Click on popup menu closes it diagram-js#702
  • Arrow keys don't work in popup menu  diagram-js#701
  • Make keyboard more friendly  diagram-js#707
  • Correct keyboard selection diagram-js#706
  • Correctly listen for <Escape> to cancel dragging diagram-js#709
  • Popup menu header selection diagram-js#711
  • Replace Menu Search only triggers on second character camunda/camunda-modeler#3347
• Release diagram-js
• Integrate new poupMenu #1775
  • Add keyboard shortcut for replace #1782

Why should we do it?

To have a modern UI that improves the modeling experience and to prepare to support replace anything.