[Feature] Recall a ship

[SnowHawkeye]

Description

(Ephemeral) Message available either via the /recall command (with an extra step of ship selection via multi-select), or via the "recall" button in the details view (see #22).

The command removes the existing timer (if it exists).

The timer must be reset in the "details" view (see #22).
The timer also needs to disappear from the "list" view (see #19)
Make sure a ship cannot be recalled if it hasn't been sent.

When the timer is off, ping the channel that was registered with the airship (see #18)

Acceptance criteria

• When using the command, ephemeral messages as described above appear
• Timer information has been updated in /details and /ships
• Relevant documentation has been added