Code snippets DATEX (Script)

We need some live code snippets for our user guides to (playground snippets that run and execute DATEX).

* [ ] We need a code input view (including syntax highlighting) and live edit.
* [x] We need a console output
* [x] A run button to execute script as string
* [x] Resize y 
* [x] Only show console once executed
* [x] Scrollable console (auto grow if more content added?)