Add P8 to Documentation

We need something like a user manual where we show how to suspend/unsuspend. @nas is there anything else I am missing?

FYI: @tkt Its not a super high prio for now, if we can release the DW bug-free version to Ledger Live market this week, then this would become an important one 🙂

Start by locating the P8 documentation and any existing user-manual sections covering suspend or unsuspend. Clarify which suspend/unsuspend procedures are needed and how P8 should be introduced; the work is done when users can follow the documentation for both operations.

Written by the indexing model from the issue text.