Initial commit for COOP+COEP article

[agektmr]

Fixes #2328

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[kaycebasques]

@agektmr it looks like you want @jpmedley to review this, is that correct?

[agektmr]

Yes, @jpmedley is already reviewing the doc.

[jpmedley]

I found a few more typos.

[agektmr]

@jpmedley Resolved all issues but not sure how to dismiss "Changes requested" by you.

[jpmedley]

I have to approve it.

[jpmedley]

@kaycebasques These are things I should have found on the first review. Since none of these change words, would you mind merging these for me? Then we can finish this today.

[agektmr]

@jpmedley Merged the suggested changes. One you LGTM, we should be good to go.

[kaycebasques]

I'll use the Commit Suggestion UI to commit these changes myself. I'm also going to check if the images can be optimized (to keep the repository size at a minimum). Then I'll merge.

[kaycebasques]

Oh sorry @jpmedley & @agektmr I thought you had asked me to review the PR. I'm now seeing that Eiji had asked Joe to review it again. Well, it LGTM on my side now. I'll approve it and then one of you can merge it whenever you want.

[agektmr]

I need @jpmedley's approval to merge this.

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[agektmr]

I rebased locally, but might have messed up 🙄

[googlebot]

CLAs look good, thanks!

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[agektmr]

I heard that the content was split, where can I find the second part? Or is it the memory API article?

We'll start working on it after we post this. cc: @jpmedley when do you think you can start working on the other half?

In general, why are there so many, I think, unrelated changes/fixes in this pull request?

It's my bad. This should have been sorted already.

[natorion]

Looks good to me now. Thanks!

[kaycebasques]

I can commit these suggestions myself. I think the new hero image needs to be optimized. I'll do that, too.