Update how we generate excerpts

[EvanBurbidge]

✨ Codu Pull Request 💻

👉 Please remove the below and replace with your own values, leaving the headers where they are. 👈

Pull Request details:

• This pull request resolves Only generate excerpt if post is published without excerpt #111
• Originally the excerpt was being generated on each update of the draft, if it didn't exist it was taking the first 156 chars of the body and generating one.
• The new behaviour puts this into the publish method only generating one if required on publish.

Any Breaking changes:

• IF ANYTHING YOU'RE COMMITTING WOULD BREAK SOMETHING, INCLUDE HERE WHAT WOULD BREAK
• IF YOU HAVE NO BREAKING CHANGES, ENTER 'None'

Associated Screenshots:

( Welcome file extensions include gifs/png screenshots of your feature in action )

• IF YOU HAVE ANY SCREENSHOTS, INCLUDE THEM HERE.
• IF YOU HAVE NO SCREENSHOTS, ENTER 'None'

[vercel]

@EvanBurbidge is attempting to deploy a commit to the Codú Team on Vercel.

A member of the Team first needs to authorize it.

[NiallJoeMaher]

LGTM!

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Updated
codu	✅ Ready (Inspect)	Visit Preview	Nov 30, 2022 at 10:18PM (UTC)

It's WIP so awaiting changes

[NiallJoeMaher]

Is this ready to review? I still see WIP

[NiallJoeMaher]

Seems to be a lot of changes in the order of classes? Is there a reason this happened or should they be removed?

[NiallJoeMaher]

@EvanBurbidge closing this since it's gone a bit stale, and my latest PR should resolve this.
Thanks for the help brother. <3