add transform-datasource-credentials command online check

[JohnJyong]

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Summary

Screenshots

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Checklist

• This change requires a documentation update, included: Dify Document
• I understand that this PR may be closed in case there was no previous discussion or issues. (This doesn't apply to typos!)
• I've added a test for each change that was introduced, and I tried as much as possible to make a single atomic change.
• I've updated the documentation accordingly.
• I ran dev/reformat(backend) and cd web && npx lint-staged(frontend) to appease the lint gods

[gemini-code-assist]

Summary of Changes

Hello @JohnJyong, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request refines a command-line utility by introducing an environment-aware mechanism. It ensures that certain operations, specifically fetching plugin identifiers, are executed only when relevant to an 'online' environment, thereby optimizing the command's behavior and preventing unnecessary resource access in other contexts.

Highlights

• Command Line Interface Enhancement: The transform-datasource-credentials command now includes a new --environment option, allowing for environment-specific execution logic. This option defaults to 'online'.
• Conditional Plugin Identifier Fetching: The command's logic has been updated to conditionally fetch plugin unique identifiers (for Notion, Firecrawl, and Jina datasources) only when the specified environment is 'online'. In other environments, these identifiers will be set to None.

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[GarfieldDai]

LGTM

[gemini-code-assist]

Code Review

This pull request introduces an --environment option to the transform-datasource-credentials command, allowing it to be run in different environments. This is particularly useful for controlling whether online requests are made to fetch plugin identifiers. The implementation is sound and achieves its goal. I have one minor suggestion to improve code readability.

[GarfieldDai]

LGTM