release: 3.5.0 (#303)

* Removal of x-sent-at from manually maintained helpers, and cleanup of modelconfig string

* Fixed tests

* chore: update SDK settings

* feat: add auto-bedrock support based on bedrock/provider.model-name

* chore(internal): version bump

* fix(docs): fix mcp installation instructions for remote servers

* feat: Update stainless.yml for project and publish settings

* release: 3.5.0

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Co-authored-by: monadoid <sam.finton@gmail.com>
Co-authored-by: Sam F <43347795+monadoid@users.noreply.github.com>
Co-authored-by: stainless-app[bot] <142633134+stainless-app[bot]@users.noreply.github.com>