[WIP] Add blog for query insights RBAC

[ansjcy]

Description

Add blog for query insights RBAC

Issues Resolved

Closes #4119

Check List

• Commits are signed per the DCO using --signoff

By submitting this pull request, I confirm that my contribution is made under the terms of the BSD-3-Clause License.

[github-actions]

Thank you for submitting a blog post!

The blog post review process is: Submit a PR -> (Optional) Peer review -> Doc review -> Marketing review -> Published.

[github-actions]

Hi @ansjcy,

It looks like you're adding a new blog post but don't have an issue mentioned. Please link this PR to an open issue using one of these keywords in the PR description:

• Closes #issue-number
• Fixes #issue-number
• Resolves #issue-number

If an issue hasn't been created yet, please create one and then link it to this PR.

[pajuric]

@kolchfa-aws - Please provide a tech docs review.

[kolchfa-aws]

@ansjcy Since this is marked WIP, please let me know when the draft is complete and the tech review is done so I can perform a doc review. Thanks!

[pajuric]

@ansjcy - Checking in the status of this blog. I am away until 7/31, so please keep Fanit in the loop as the soonest this can publish as of today is 7/30.