Overview
The IMX219 is an uncategorised made by Raspberry Pi.
PCBKit's library has its footprint (raspberry-pi-imx219:Raspberry_Pi_IMX219, from Antmicro), ready for a KiCad board.
Symbol
The library has no symbol for this part yet.
Footprint
Questions
Is there a KiCad symbol and footprint for the IMX219?
Yes. the footprint raspberry-pi-imx219:Raspberry_Pi_IMX219, both drawn on this page. PCBKit places them on a board for you when you design with it.
Where is the IMX219 datasheet?
Raspberry Pi publishes it: the Datasheet link on this page opens it.