Add time type arg support

[pahanini]

Now arg of type time in query function args will be replaced with ''

eg
clickhouse.NewQuery("Select * From event Where time > ?", time.Now())
will fail

[m1nor]

Can't you pass it as string?

clickhouse.NewQuery("Select * From event Where time > '?'", time.Now().String())

[pahanini]

@minor yes, we can use time.Format() but time type is frequently used type so it produces a lot of additional code. E.g.

clickhouse.NewQuery(sql, startDate.Format(Fmt), endDate.Format(Fmt))

Instead of

clickhouse.NewQuery(sql, startDate, endDate)

[isage]

Accepted pull request actually makes things worse, because instead of converting time to DateTime it converts to Date, losing time part.

[isage]

Moreover, accepted pull request marshals time as unquoted string, which is wrong.