[MTR/NTE] Solaris Transport Pack - IV Gen [Trolleybuses]

Tech deleted united version of STP IV Gen suddenly instead of III Gen United version. So. It's reupload version

Updated icon and description of all buses to find buses of the required generation faster. Names will start with [IV] in it

For the RP experience, it is highly recommended to use the TrolleyWire pack from bl_tmf: Modrinth page. Or use the tram line infrastructure pack from the same author: Modrinth page