Replace the GWT-based DMN Editor with the new React-based DMN Editor in Chrome Extension

[tiagobento]

Except from the Chrome Extension, the old Editor should be available on the other distribution channels for a while.

On KIE Sandbox, behind a feature flag on the "Settings" modal.
On VS Code, registering the new one as default will do. Keeping the old one around via Open with....
On Standalone Editors, we'll add a deprecation note for DMN on @kie-tools/kie-editors-standalone and we'll have a new package @kie-tools/dmn-editor-standalone (see #1398).

[tiagobento]

KIE Sanbox and VS Code will be addressed as part of

• Build a first version of the new React-based DMN Editor with ~90% feature parity with the current GWT-based one #577

... Chrome Extension and Standalone Editors will be addressed here.