Bus-user

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- [SerialServer] zero place EMULATOR.ADDRESS.FIRST_FREE__PAIRED_FOR_EMU

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- [SerialClient] zero + clear Emulator buffer on connection

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- [SerialClient]:
- ref to FIRST_FREE__PAIRED_FOR_EMU
- add Emulator into it!!!
- [SerialServer_Base] add HELLO_MSG__SEND_ON_START

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- [SerialClient] renames + add addresses_shorted__detect/*count

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- [SerialClient] place all important lists ADDRESSES__SYSTEM/PAIRED into base class(SerialClient)! so you can use Type__AddressAutoAcceptVariant.FIRST_PAIRED_0/1 in server!!!

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- [SerialClient] BIG REF:
- ref address as TYPE__ADDRESS with autoconnect
- add lists ADDRESSES__SYSTEM/PAIRED
- [Type__AddressAutoAcceptVariant] add FIRST_SHORTED + FIRST_PAIRED_0/1