[Patch] Update regex to parse hook names from module identities

[lennym]

This allows the hook names to be correctly parsed from modules published to npm under a user's namespace/scope - e.g. @user/sails-hook-name

Follows discussion in #3502

[Salakar]

I updated my comment on the issue, the regex can be reduced further to the below:

/^(?:@.+\/)?(sails-hook-)/

See: https://regex101.com/r/lC8sM4/2

Sorry! :) But then again either way works 👍

[mikermcneil]

@lennym nice- this was the intended behavior (unless an identity is specified in the hook def, in which case that's used). Do you think you could tweak this pr to support using that if it's not undefined? Happy to help if I can-- this is what we need to be able to properly override core hooks via npm installed hooks (eg If you npm install an experimental version of sails-hook-orm-mongoose in your app that is fully compatible with blueprints and pubsub, then that hook needs to expose its identity as 'orm' ). @sgress454 and I can help with tests and docs on this if you don't have time (we were wanting to get this in anyway)

[mikermcneil]

And @Salakar, thanks for helping review!

[sgress454]

Working on this now, adding some tests and should have it merged soon.