Implement Raspberry5Driver and board

We should investigate if it makes sense to implement Raspberry 5 driver and board. We should investigate:
- perf differences
- other features between our libgpiod implementation and RPi4 direct implementation

and do the same for RPi5 and figure out if it makes sense to implement it. If the perf is similar we might want to decide to not do this.

Ref: https://github.com/dotnet/iot/issues/2262