password generator?

It would be neat to have a command in the client (chat or otherwise) that generated passwords. Similar to `/flip`, it could take a length argument. I'm not entirely how best to communicate if it should include length, numbers, or symbols .... maybe have a sane default? This would be similar to 1password's password generator.

e.g. `/pswd 24` would return `vUaigQXfyezsXKsexAgKkdUb`

Every time you use `/pswd` it could send the generated password to your self-chat (a feature I love).

Just an idea.

No files, tests, or entry points are identified in the issue. First locate the client's chat-command handling, then resolve the password defaults, length and character options, and self-chat behavior before defining what completion requires.

Written by the indexing model from the issue text.