feat(v2): add notifications for commands

[taylorallen0913]

Motivation

I found this really cool library for dealing with notifications, so I thought why not implement it here. I've implemented notifications for start, swizzle, build, and deploy so far.

Have you read the Contributing Guidelines on pull requests?

yes

Test Plan

Start:

Swizzle:

Build:

Related PRs

(If this PR adds or changes functionality, please take some time to update the docs at https://github.com/facebook/docusaurus, and link to your PR here.)

[docusaurus-bot]

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[anshulrgoyal]

I find notification a bit annoying. Maybe adding config to disable it might be good.

[slorber]

Thanks

Some persons might like such notifications but it's not the case for all users.

I'd rather have this feature being an opt-in feature, that you can enable with a configuration setting (that would be documented, and false by default).

[slorber]

@taylorallen0913 tell me if you are interested to update the PR, and making this feature optional.

[taylorallen0913]

I would be willing to continue this feature, but I am not sure what config you are intending to hold this in. Where would you suggest putting the setting?

[anshulrgoyal]

I would be willing to continue this feature, but I am not sure what config you are intending to hold this in. Where would you suggest putting the setting?

I think adding a flag to each command is a good place.
eg: yarn build --notify

[slorber]

I'd rather have a notification: true/false (false by default) in site config than a new cli option. People can use env variables if they want it to be dynamic anyway.

[slorber]

Hi @taylorallen0913 , I'm closing for now but if you want to do the changes I'll re-open