[KYUUBI #374] [DOC] Add Collaborators page

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### _Why are the changes needed?_
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Please clarify why the changes are needed. For instance,
  1. If you add a feature, you can talk about the use case of it.
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### _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](https://kyuubi.readthedocs.io/en/latest/tools/testing.html#running-tests) locally before make a pull request

Closes #374 from pan3793/doc.

da57a03 [Cheng Pan] remove unused import js script
7e791ee [Cheng Pan] add Collaborators page

Authored-by: Cheng Pan <379377944@qq.com>
Signed-off-by: Kent Yao <yao@apache.org>

docs/community/collaborators.md

@@ -0,0 +1,9 @@
+# Collaborators
+
+Name | GitHub ID | Corp
+---  | ---       | --- 
+Kent Yao    | @yaooqinn    | NetEase Inc
+ulysses-you | @ulysses-you | NetEase Inc
+Cheng Pan   | @pan3793     | 问卷网
+
+See full contributor list at [contributors](https://github.com/yaooqinn/kyuubi/graphs/contributors).

docs/community/index.rst

@@ -9,5 +9,6 @@ Community
     :numbered: 4
     :glob:
 
+    collaborators
     contributions
     badges