Add GBFS endpoint for Whoosh

[egor-bayandin]

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name: Default
about: Suggest changes to MDS
title:

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MDS Pull Request

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Explain pull request

Please provide a clear and concise reason for this pull request and the impact of the change

Is this a breaking change

A breaking change would require consumers or implementors of the API to modify their code for it to continue to function (ex: renaming of a required field or the change in data type of an existing field). A non-breaking change would allow existing code to continue to function (ex: addition of an optional field or the creation of a new optional endpoint).

• Yes, breaking
• No, not breaking
• I'm not sure

Impacted Spec

Which spec(s) will this pull request impact?

• agency
• policy
• provider

Additional context

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