No, they are sold in such large quantaties that you need to talk directly to the manufacturers. Think about the quantity of smartphones that are made.
Due to the that, the documentation is not easy to find.
No, it does not make sense to play with them.
You would have to build the optics (lens and correct focal distance) around the sensor.
The interface to the sensor is very high speed, in the MHz SPI.
It is just easier to buy pre-built modules.