/binary handler: allow specifying user/password/host

[alexey-milovidov]

Changelog category (leave one):

• Improvement

Changelog entry (a user-readable short description of the changes that goes to CHANGELOG.md):

/binary HTTP handler allows to specify user, host, and optionally, password in the query string.

[robot-clickhouse-ci-1]

This is an automated comment for commit 4dcf27e with description of existing statuses. It's updated for the latest CI running

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Check name	Description	Status
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Check name	Description	Status
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