SQS: Add new endpoint strategy

[viren-nadkarni]

This PR updates user docs with details about the new SQS endpoint strategy

Depends on localstack/localstack-artifacts#20

[github-actions]

🎊 PR Preview has been successfully built and deployed to https://localstack-docs-preview-pr-877.surge.sh 🎊

[alexrashed]

On the one hand, this PR depends on localstack/localstack-artifacts#20 (because before that the endpoints cannot be properly used with HTTPS enabled), and the advertisement of the new endpoint strategy also depends on how you decide to rename them for v3:
localstack/localstack#9454 (review)
Are you going to rename them from domain to legacy, and then renaming standard to domain. Because if so, I would not add this to the docs like this right now, but wait for the release and describe the new way (otherwise users who switch to standard now, will experience a breaking change with 3.0).

[viren-nadkarni]

Are you going to rename them from domain to legacy, and then renaming standard to domain. Because if so, I would not add this to the docs like this right now, but wait for the release and describe the new way (otherwise users who switch to standard now, will experience a breaking change with 3.0).

I'm against renaming the existing strategies to avoid confusion among users. It is possible that we might also break user workflows in doing so.

[alexrashed]

That's a good argument! But then let's still wait for the cert to be updated before we advertise the new endpoint strategy...