clear webdriver versions before install right one because webdriver can not select the right one from time to time

like here:
```
npx webdriver-manager status
chromedriver versions available: 84.0.4147.105 [last], 87.0.4280.66
```

removed all code concerning workspace-monitor (feature not used anymore or unclear what benefit it is of)

verona-2.1.0-compliant playerConfig - this is not implemented yet anyway

As in verona-player-interface- 2.1.0 requested, the `playerConfig` in `vopReadyNotification` now

* includes `pagingMode`, `stateReportPolicy` and `logPolicy` from bookletConfig

* includes `unitNumber`, `unitTitle`, `unitId`

* it includes also `unitCount`, which is not part of the verona-2.1.0-interface, but proposed here: https://github.com/verona-interfaces/player/issues/24

It is erroring out otherwise.

fixes #221