Refactor command execution into commands module

This patch refactors the command execution.  A command is represented by
a struct implementing the Command trait.  The enum_cmd macro is used to
generate a mapping from the CommandId enum to a Command instance and to
execute the command.  The request and response data is manually
converted from and to raw byte slices.

As we do not have a standard library, we cannot create a Box<Command>
from a CommandId.  Instead, we directly delegate the execute method to
the corresponding Command.

0 files changed, 0 insertions, 0 deletions