Add timestamp.column.type configuration, to support various data types of timestamp column.

[mayuanxiaonong]

#340 Add timestamp.column.type configuration. When set a column with date type as timestamp column, use stmt.setDate instead of stmt.setTimestamp, to speed up the query.

[ghost]

@confluentinc It looks like @mayuanxiaonong just signed our Contributor License Agreement. :+1:

Always at your service,

clabot

[cla-assistant[bot]]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}