fix storybook actions/docs

[mdvanes]

Several things do not work yet in Storybook:

• automatic doc/prop doc generation, like with React
• logging on "action"
• a proper example in de Story tab (e.g. ) like in JSX

fix storybook actions/docs, see

• https://storybook.js.org/docs/angular/writing-docs/build-documentation "start-storybook --docs --no-manager-cache"
• https://storybook.js.org/docs/angular/essentials/controls#hide-nocontrols-warning
• https://storybook.js.org/docs/angular/configure/typescript
• see compodoc in https://storybook.js.org/docs/angular/essentials/controls#choosing-the-control-type