Ability to change history path by changing env

[filimonov]

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For changelog. Remove if this is non-significant change.

Category (leave one):

• New Feature

Short description (up to few sentences):
Possibility to change the location of clickhouse history file using CLICKHOUSE_HISTORY_FILE env.

Detailed description (optional):
Sometimes you may need to use several history files (for different clusters),
Or use history file stored in some network location.
Or just disable writing history by using /dev/null instead of history file.

Now it's possible using CLICKHOUSE_HISTORY_FILE env variable (you can put it to your ~/.bashrc or set for particular run).

Before that the only possibility to change that was editing /etc/clickhouse-client/config.xml
implements #6622

[filimonov]

I've tested that manually, and it looks ok.

[alexey-milovidov]

Ok.

BTW, we also support ./clickhouse-client.xml and ~/.clickhouse-client/config.xml.