Added deck command for listing decks with revision and serial

[evoggy]

Adds a deck command with a list sub-command, showing the decks attached to
the Crazyflie with their board revision and serial number:

$ cfcli deck list
Name           | Rev | Serial
---------------|-----|-------------------------
bcFlow2        | A   | 0DD07B8E0000002D
WiFi camera de | G   | 7E0048001250465753393020

Decks are found through their identity memory, and both kinds are covered:

• OneWire — name and revision from the memory elements, serial is the
  1-wire ROM id of the memory chip (8 bytes).
• DeckCtrl — name and revision parsed from the info page at address 0
  (magic validated), serial is the unique CPU id of the controller (12 bytes).

The serial number is reported in the memory info packet, so a deck whose memory
can't be read is still listed with its serial and ? in the fields that
couldn't be read. The reason is printed on stderr, so it doesn't disturb
--csv output.

--csv emits name,revision,serial. Documentation in docs/deck.md.

Tested against a Crazyflie with one deck of each kind attached.

On the table formatting

param list and log list already print col | col with a dashed rule, but
with hardcoded column widths that overflow when a value is longer than the
column. This PR adds print_table() in utils::display, which sizes columns
to their content, and uses it for deck list.

Converting param, log, mem and lps to a shared table renderer is a
follow-up — possibly using tabled instead of hand-rolling it, which would
also fix display width for wide characters. Deliberately left out of this PR.