Add swagger-php generated basePath

[bravo-kernel]

DocsController should generate the three fields used by Swagger-UI to generate and show the Base Url:

        basePath="/v0",
        host="your.api.local",
        schemes={"http", "https"},

NEVER specify these fields in the source code annotations as this will break deploying your app to environments using no/different basePath.

Update:
Only schemes should be configurable, basePath and host can be fetched realtime.

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