feat(gatsby-cli): show update notification with gatsby --version

[muescha]

Summary

the gatsby command should also print the update notification

Basic example

when i run gatsby develop i get an update notification
i would be nice to see this update info also after gatsby --version

$ gatsby develop

Something is already running at port 8000



   ╭───────────────────────────────────────╮
   │                                       │
   │   Update available 2.8.13 → 2.9.0     │
   │   Run yarn add gatsby-cli to update   │
   │                                       │
   ╰───────────────────────────────────────╯

$ gatsby --version
Gatsby CLI version: 2.8.13
Gatsby version: 2.15.12
  Note: this is the Gatsby version for the site at: /Users/muescha/Work/gatsby/github/pr/test

Motivation

if i check the version it would be nice also to see if there any updates available

[muescha]

Notes on this - we use update-notifier to print out this information

By default, it will keep track of last check and only limit it to 1 check per day. Package doesn't have builtin method to "force check", but we might be able to trick it with setting updateCheckInterval option to something really low (1s?) for --version/info. Would need to make sure also to not display it multiple times so implementation might be hairy, because right now we do the check for each command (and whichever happen to be command 1 day from last one will get the notification)

Originally posted by @pieh in #21989 (comment)

[github-actions[bot]]

Hiya!

This issue has gone quiet. Spooky quiet. 👻

We get a lot of issues, so we currently close issues after 30 days of inactivity. It’s been at least 20 days since the last update here.
If we missed this issue or if you want to keep it open, please reply here. You can also add the label "not stale" to keep this issue open!
As a friendly reminder: the best way to see this issue, or any other, fixed is to open a Pull Request. Check out gatsby.dev/contribute for more information about opening PRs, triaging issues, and contributing!

Thanks for being a part of the Gatsby community! 💪💜

[github-actions[bot]]

Hey again!

It’s been 30 days since anything happened on this issue, so our friendly neighborhood robot (that’s me!) is going to close it.
Please keep in mind that I’m only a robot, so if I’ve closed this issue in error, I’m HUMAN_EMOTION_SORRY. Please feel free to reopen this issue or create a new one if you need anything else.
As a friendly reminder: the best way to see this issue, or any other, fixed is to open a Pull Request. Check out gatsby.dev/contribute for more information about opening PRs, triaging issues, and contributing!

Thanks again for being part of the Gatsby community! 💪💜