mgmt/osdp: pd: Add capability checks on incoming commands

OSDP compliant devices communicate their capabilities and discover what
their peer can and cannot do. Right now, PD advertises these capabilities
and expects CP to honor them. Although this is not known to cause any
issues, it is not desirable to allow such accesses.

Add a check of incoming commands to to validate that the corresponding
capability was enabled and advertised.

Signed-off-by: Siddharth Chandrasekaran <sidcha.dev@gmail.com>