Provide Pinout for the module

In the current version it is not apparent to what extent the CB1 is compatible with a CM4. Many functions are not possible (as an example the CSI port). By providing the pinout and the associated functions, technical incompatibilities can be derived more quickly. I have not been able to find any information on this so far.

With the provision, many questions would explain themselves.

Start by identifying the CB1 pinout and associated functions, then compare them with the CM4 interface described in the issue, including the CSI port example. Done means the project provides a pinout with function information that makes technical incompatibilities clear.

Written by the indexing model from the issue text.