feat(anthropic): Add support for container reuse for code execution

[pokey]

Adds container parameter to ChatAnthropicCallOptions and passes it through to Anthropic client.

See https://docs.claude.com/en/docs/agents-and-tools/tool-use/code-execution-tool#container-reuse

• Needed by feat(langchain/createAgent): Add anthropicCodeExecution middleware pokey/langchainjs#1

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Latest commit: 197da64

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[pokey]

Do we want an integration test?

[christian-bromann]

LGTM 👍

[christian-bromann]

Do we want an integration test?

If you can come up with an easy one that validates the functionality and is stable, let's do it!

[hntrl]

an integration test would be handy! And because this is a new feature add it would be good to add a changeset

[hntrl]

am fine to keep this, but as commentary I'm not sure how much benefit we get from testing invocationParams directly (it's only part of the messages + options -> sdk payload "chain")

ideal state is the conversion logic of messages + options is collapsed into something like getRequestPayload and that's what we test (this is how python does it iirc). Not needed for this PR though.

ok I'll get off my soap box now