[improve]: upgrade clickhouse jdbc version to 0.8.2

[potoo0]

Why are the changes needed?

Close #157.

Brief change log

• upgrade clickhouse jdbc from 0.6.4 to 0.8.2,
  breaking: username and password must be set(password allow empty)
• fix the url of Connector Options in README

How was this patch tested?

• Add some test cases that check the changes thoroughly including negative and positive cases if possible

• Add screenshots for manual tests if appropriate

• Run test locally before making a pull request

Documentation

• Does this pull request introduce a new feature? (yes / no): no
• If yes, how is the feature documented? (not applicable / docs / JavaDocs / not documented)

[itinycheng]

Hi @potoo0

Thanks for this PR.
However, it's quite large and includes many changes unrelated to the PR's purpose.
Can you split those changes into multiple PRs with separate goals? Let this PR be more focused.