Source Recharge: Fix airbyte-lib integration

[flash1293]

Due to a merge conflict that wasn't resolved correctly, source-recharge doesn't define a CLI entrypoint for airbyte-lib.

This PR is aligning it with the other connectors.

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
airbyte-docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Feb 2, 2024 1:38pm

[github-actions]

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