Add support for timeout and deadline parameters when messages are sent
to a message queue. To keep code duplication small, the `utils.rs`
file contains a helper function to parse the `Duration` from the
`String` received from the timeout parameter. Add conflict rules for
the timeout and deadline parameters.
This subcommand receives one or more messages from a queue. Three
different methods are supported, read message by message, read until a
given timout or read until a specified date and time. This subcommand
also supports the `--non-blocking` flag.
The create command creates a new message queue with support of the
typical parameters `mode`, `capacity` and `msgsize`. This command also
supports the global argument `verbose`.
finga