<!--
Thanks for sending a pull request!

Here are some tips for you:
  1. If this is your first time, please read our contributor guidelines: https://kyuubi.readthedocs.io/en/latest/community/contributions.html
  2. If the PR is related to an issue in https://github.com/apache/incubator-kyuubi/issues, add '[KYUUBI #XXXX]' in your PR title, e.g., '[KYUUBI #XXXX] Your PR title ...'.
  3. If the PR is unfinished, add '[WIP]' in your PR title, e.g., '[WIP][KYUUBI #XXXX] Your PR title ...'.
-->

### _Why are the changes needed?_
<!--
Please clarify why the changes are needed. For instance,
  1. If you add a feature, you can talk about the use case of it.
  2. If you fix a bug, you can clarify why it is a bug.
-->
As we will release soon, it's better to format the module name and artifactId.

The name of kyuubi-main sounds like a bootstrap of Kyuubi but not a server.

### _How was this patch tested?_
Pass CI

Closes #872 from ulysses-you/kyuubi-server.

Closes #871

1437f9b5 [ulysses-you] address comment
117f2c7c [ulysses-you] server
86986baa [ulysses-you] master
eba660a2 [ulysses-you] Merge branch 'master' of https://github.com/NetEase/kyuubi

 into kyuubi-server
e649012b [ulysses-you] change module name
Authored-by: ulysses-you <ulyssesyou18@gmail.com>
Signed-off-by: Cheng Pan <chengpan@apache.org>