* Update version number from 3.0.1 to 3.0.2

* Fix version update

* fix dead link
Co-authored-by: NJay Chung <zhongjiajie955@gmail.com>

Co-authored-by: Nchenrj <102030622+xdu-chenrj@users.noreply.github.com>

when create task switch in python api, switch branch not show correctly,
due to we add some unnecessary attribute to switch task, this patch we
add `_task_ignore_attr` in class `Task` to ignore those unnecessary
attribute from `_task_default_attr`

(cherry picked from commit a86f4e26)

Currently, our core and side module dependent on each others. and will cause
cycle import in our codebase, especially in issue #10905, we try to refactor
to solve this problem.

This patch do the following change:

* Rename module `side` to `models`
* Move `core/base` and `core/sidebase` to dir `modules`
* Move `configuration` and `default_config.yaml` to the root of pydolphinscheduler

(cherry picked from commit 7a766cbc)

* Change version of package
* Fix tox error
* Change dev status to beta
* py4j not work on py{10,11} OS Windows

(cherry picked from commit 4d427ee2)

(cherry picked from commit c59a8503)

Co-authored-by: NJiajie Zhong <zhongjiajie955@gmail.com>
(cherry picked from commit 635fde19)

(cherry picked from commit 564a815d)

* Using sphinx-multiversion to support multiple version
of python api document
* change python api sidebar link
* fix whitelist_externals deprecated and add git

close: #8227

(cherry picked from commit 26afd655)

(cherry picked from commit 983f9b41)

Co-authored-by: Nkezhenxu94 <kezhenxu94@apache.org>

(cherry picked from commit 9e692f91)

(cherry picked from commit 59cd8615)

* when task with more than one upstreams, mapper
   TaskDefinitionMapper method queryByName will return
   more than one record, and failed the mybatis result
   type, so we have to add `limit 1` to it to
* add multiple runs of example in integrate test
* Change from subprocess.Popen to subprocess.call_check
  in integrating test which will raise an error when failed

(cherry picked from commit 81930e54)

(cherry picked from commit 113a6712)

* Remove add leading `$` from command
* Add copy button from code block
* Using `python -m pip` to install package avoid error

(cherry picked from commit b4eee7ed)

(cherry picked from commit 79705733)

(cherry picked from commit f512e3c3)

close: #10431
(cherry picked from commit b86dc53a)

This patch fix the error release state not work when it set to
offline and submit it to Java gateway, it error because we do
not pass the attribute to Java gateway function
`createOrUpdateProcessDefinition`

close: #9779
(cherry picked from commit 56e0ea80)

rename them and add `python` suffix in the end
close: #9121

(cherry picked from commit bf4b8ff0)

(cherry picked from commit a2cd2a99)