FS22 - Enhanced Bunker Silo V1.1

Changelog 1.1:
- add function to cover silo after openening
- add separate button for completely uncover silo

This script extends the silos with the function to open them completely. This allows a silo that is not yet empty to be refilled and then closed again for fermentation. Opening the silo completly will revert the completed fermenting process.

Authors: Team LTW