feat(s3): add options to allow use custom instance

[vhashimotoo]

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Summarize your changes:

This PR adds the endpoint option what's adds the ability to change default S3 endpoint, to custom S3 instance. Also added s3ForcePathStyle and region for the same reasons.

[malept]

Thanks! Just one question.

[masterkain]

thanks, I just started out and trying to use scaleway's object storage, any chance we can cut a 6.0.0-beta.51 release with this in it?