Creates new page detailing Bedrock connector setup

[benironside]

Fixes #5113 by adding a page with step by step details for how to set up an Amazon Bedrock connector.

Preview:Set up an Amazon Bedrock connector

[github-actions]

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[mergify]

This pull request does not have a backport label. Could you fix it @benironside? 🙏
To fixup this pull request, you need to add the backport labels for the needed
branches, such as:

• v7.x is the label to automatically backport to the 7.x branch.
• v7./d./d is the label to automatically backport to the 7./d branch. /d is the digit

NOTE: backport-skip has been added to this pull request.

[joepeeples]

Added a few small line edits. Also, it'd help to give users a bit more context and explanation of what they're doing overall, and in each subsection. I think these steps are clear enough for users to follow, but we could tell them more about what they're doing, and why.

If Amazon changes their UI in the future (and of course they will), then our users will be better able to adjust if we equip them with a good understanding of broadly what they need to do. If they're just blindly following steps, it'll be harder for them to adjust.

[Charelzard]

Other than the comments I added, everything looks good. Please be sure to include the videos in each respective section. I like how you went the route to add the connectors vs doing it in the ai assistant to give a more standardized approach. We can use this in the other docs going forward.

[joepeeples]

LGTM! The added bits nicely guide the reader through this multi-step process.