Added PR Template

[ggetz]

Description

We've gotten rid of the Cesium Concierge, who will no longer post handy comments like this.

While CLA checking is still in the works as part of a separate effort, this PR template aims to replace the functionality of that comment.

Issue number and link

Fixes #6167

Testing plan

I've used the template for this PR.
It will show up for PRs once merged into main.

Author checklist

• I have submitted a Contributor License Agreement
• I have added my name to CONTRIBUTORS.md
• I have updated CHANGES.md with a short summary of my change N/A
• I have added or updated unit tests to ensure consistant code coverage N/A
• I have update the inline documentation, and included code examples where relevant N/A
• I have performed a self-review of my code

[ggetz]

The CI failure is due to the latest update of our eslint rules. I'll open a separate PR to resolve it.

[jjspace]

Looks good, couple small comments.

It seems like the main two things losing Concierge lost was checking for a lack of changes in specific files. I feel like there should be solutions to do that same check in GHA if we wanted to instead of the checklist that could quickly start to get ignored? Just a thought

[ggetz]

It seems like the main two things losing Concierge lost was checking for a lack of changes in specific files. I feel like there should be solutions to do that same check in GHA if we wanted to instead of the checklist that could quickly start to get ignored? Just a thought

Good point. We might be able to do so with GitHub actions instead. I'll take a quick look. Either way, that can be a follow-up to this PR for the time being.

[ggetz]

Thanks @jjspace! Updated.

[jjspace]

Thanks @ggetz LGTM!

[jjspace]

@ggetz One downside to doing the confirmations with checkboxes is that GH considers them tasks and will include the completion count in a handful of places around the site. Might still be handy but it does add a bit of distraction/confusion especially if there is an "actual" tasklist in a PR