feat(scully): logrocket render plugin.

[GuzmanPI]

The docs app uses this plugin.

Implements the pluguin

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/scullyio/scully/blob/main/CONTRIBUTING.md#commit
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Other... Please describe:

LogRocket plugin for the docs. This may be an npm plugin in the future.

What is the current behavior?

Issue Number: #673

What is the new behavior?

Adds LogRocket's scripts to the tag.

Does this PR introduce a breaking change?

• Yes
• No

Other information

[SanderElias]

Please change the thing I highlighted!
Also, shouldn't you define a default config in there?

BTW, you don't need to blush it to be used in scully.

[jorgeucano]

@GuzmanPI I check the test and show this error

    +     <script src="https://cdn.logrocket.io/LogRocket.min.js"></script>
    +     <script>window.LogRocket && window.LogRocket.init('undefined/undefined');</script></head>``` 
Please check the config is not working!

[GuzmanPI]

I'll check the tests

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you all sign our Contributor License Agreement before we can accept your contribution.
2 out of 3 committers have signed the CLA.

✅ GuzmanPI
✅ jorgeucano
❌ HeroDevs

---

HeroDevs seems not to be a GitHub user. You need a GitHub account to be able to sign the CLA. If you have already a GitHub account, please add the email address used for this commit to your account.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}