Improve user experience for SQL UI

[dgloeckner]

The following improvements were made

• use filtering capabilities of el-tree-v2 to allow searching for non-empty tables, searching by database, table and column name
• add a shortcut to run SQL queries
• provide more clear table statistics
• make tabs which require additional backends (ML and graph) switchable

In additionto UX imprrovements I added a Helm chart which is useful for deployment in Kubernetes.

Finally, ClickHouse login credentials can be populated via URL parameters. This allows to build "deep links" into ClickHouse instances. In my case there's a kind of portal with many ClickHouse instances and we want to simplify the user access to those.

[dgloeckner]

@wangqinghuan and other devs. Would be great to get this merged.