Single command that sets slack status and notifications, adds calendar entry for time tracking, enables Focus mode for OSX.

1. Copy .focus_env.default to .focus_env (SLACK_USER_TOKEN variable setting will come from step 2). Set your google calendar name (e.g. "youremail@gmail.com").
2. Set up the deno app according to slack-status/README.md.
3. Set up gcalcli according to their project docs.
4. Symlink focus.sh to something in your path, e.g. to ~/bin/focus.
5. Using the shortcuts.app in OSX, create a "Focus On" and "Focus Off" shortcut that does just that (turns on or off Focus mode).

Run focus <minutes> <title> to

1. Create a calendar event for the alloted time.
2. Set slack status to "focus" and turn off notifications.
3. Enable "Focus" mode in OSX. N.B. CTRL-C will cancel the focus window and adjust the calendar event time correctly.