Overview
The 255 is a module made by Adafruit Industries with 5 pins. Timing - Modules ROHS.
JLCPCB lists it (part C17530873).
Symbol
The library has no symbol for this part yet.
Footprint
The library has no footprint for this part yet.
Questions
Where is the 255 datasheet?
Adafruit Industries publishes it: the Datasheet link on this page opens it.
Where can I order the 255?
JLCPCB lists it as part C17530873, with 0 in stock; the sellers' links on this page open their listings.