feat(example): add an example of deploying langchain application integrated with llama2

[jianzs]

1. Does this PR affect any open issues?(Y/N) and add issue references (e.g. "fix #123", "re #123".):

• N
• Y

2. What is the scope of this PR (e.g. component or file name):

• Client SDK
• Infra SDK
• Examples

3. Provide a description of the PR(e.g. more details, effects, motivations or doc link):

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Other

• Add a regular method named endpointName for the SageMaker client, required by the SageMakerEndpoint class in LangChain application.
• Activate Lambda's HTTP access feature. Because the Api Gateway comes with a non-adjustable 30-second timeout limit. This means that if the generation process exceeds this time window, we would receive a 503 Service Unavailable error. Therefore, we directly use Lambda functions to handle requests.
• Enable logging for AWS API Gateway to simplify debugging.

4. Are there any breaking changes?(Y/N) and describe the breaking changes(e.g. more details, motivations or doc link):

• N
• Y

5. Are there test cases for these changes?(Y/N) select and add more details, references or doc links:

• Unit test
• Integration test
• Benchmark (add benchmark stats below)
• Manual test (add detailed scripts or steps below)
• Other

[changeset-bot]

🦋 Changeset detected

Latest commit: a94e19b

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 4 packages

Name	Type
@plutolang/pluto-infra	Patch
@plutolang/pluto	Patch
@plutolang/cli	Patch
@plutolang/simulator-adapter	Patch

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[Peefy]

LGTM