feat(connectors,sagemaker): introduce AWS SageMaker connector

[igpetrov]

Description

This PR introduces documentation to the AWS SageMaker Connector.

Related to https://github.com/camunda/product-hub/issues/2325

When should this change go live?

This connector will be 'released' in 8.6 however, users would still be able to download it from the Connectors marketplace or repository. This means, that we have to keep it in /next/ until 8.6 stable release.

Otherwise, it is ready to be reviewed any time and merged just after @slolatte gives a sign-off as QA. Once sign-off is given, I will remove hold label and notify separately.

• This is a bug fix, security concern, or something that needs urgent release support.
• This is already available but undocumented and should be released within a week.
• This on a specific schedule and the assignee will coordinate a release with the DevEx team. (apply hold label or convert to draft PR)
• There is no urgency with this change and can be released at any time.

PR Checklist

• My changes are for an already released minor and are in /versioned_docs directory.
• My changes are for the next minor and are in /docs directory (aka /next/).

• My changes require an Engineering review, and I've assigned the Engineerring DRI or delegate.
• My changes require a technical writer review, and I've assigned @christinaausley as a reviewer.

[github-actions]

👋 🤖 🤔 Hello! Did you make your changes in all the right places?

These files were changed only in docs/. You might want to duplicate these changes in versioned_docs/version-8.5/.

• docs/components/connectors/out-of-the-box-connectors/amazon-sagemaker.md
• docs/components/connectors/out-of-the-box-connectors/available-connectors-overview.md

You may have done this intentionally, but we wanted to point it out in case you didn't. You can read more about the versioning within our docs in our documentation guidelines.

[igpetrov]

👋 🤖 🤔 Hello! Did you make your changes in all the right places?
These files were changed only in docs/. You might want to duplicate these changes in versioned_docs/version-8.5/.

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Thank you, robot 🤖 . I need my changes only in /next/ until 8.6 stable release.

[igpetrov]

The connector passed QA successfully. The element template was submitted to Connectors Marketplace.

@crobbins215 - please give guidance whether we should merge this documentation. Please note, that the connector will be available officially with 8.6 but with the upcoming 8.6-alpha, customers can use it too.

[igpetrov]

In this documentation, I included the docs in the /next/ section, so shouldn't cause much trouble but it's your call

[crobbins215]

If its on the marketplace, which is should be soon, just reviewing, we should include it in the next docs

[christinaausley]

This is really clean! Nice work.