docs(weave): working with Bedrock guide

[J2-D2-3PO]

https://wandb.atlassian.net/browse/DOCS-1075

This PR adds a new guide in Integrations for Amazon Bedrock. All code samples are taken from our published blog https://wandb.ai/amazon-wandb/bedrock-weave/reports/Getting-Started-with-Amazon-Bedrock-and-W-B-Weave--Vmlldzo3NTAxMTgx and the content itself is modified and edited to fit in the docs.

Supersedes #3108

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Preview this PR with FeatureBee: https://beta.wandb.ai/?betaVersion=38adb52b8b9eb0059a1f43a9141c57b91089032d

[J2-D2-3PO]

@tssweeney per your point that this Bedrock guide doesn't belong in Integrations and should be called "Working with Bedrock" or something similar:

- There's not really a good place to put content like this in the existing docs structure. The closest is Cookbooks, but those all have notebooks and are auto-generated. Anywhere else in the docs, it would get lost or clog up the existing structure. So, I created a new top level sub category Tutorials under Documentation to contain tutorials that don't have a NB associated with them (see screenshot). If we feel strongly about this, I can put elsewhere, but I think this is the best bet atm, assuming we aren't doing the larger docs restruct yet <- This comment isn't relevant anymore, as someone already went ahead and merged a bedrock guide in Integrations in #3145. So, let's just keep that structure, and move my content to our cookbooks section. I really don't think we should add any more subsections to the docs menu, it's already cluttered

• I agree on the rename, updated