[improve] More pythonic way for parameter local_params in class task

[jieguangzhou]

Brief Summary of The Change

close: #21

# [start workflow_declare]
 r"""
 A tutorial example set local parameter in pydolphinscheduler.
 Method 1:
     task = Shell(..., input_params={"input":"a"}, output_params={"output": "b"})
 Method 2:
     task = Shell(...)
     task.add_in("input", "a")
     task.add_out("output", "b")
 """

 from pydolphinscheduler.core.parameter import ParameterType
 from pydolphinscheduler.core.workflow import Workflow
 from pydolphinscheduler.tasks.shell import Shell

 with Workflow(name="local_parameter_example", release_state="offline") as workflow:

     # Add in task __init__ func
     task_1 = Shell(
         name="task_1",
         command="echo hello pydolphinscheduler",
         input_params={
             "value_VARCHAR": "abc",
             "value_INTEGER": 123,
             "value_FLOAT": 0.1,
             "value_BOOLEAN": True,
         },
         output_params={
             "value_EMPTY": None,
         },
     )

     # Add in task instance
     task_2 = Shell(name="task_2", command="echo hello pydolphinscheduler")

     task_2.add_in("value_VARCHAR", "abc")
     task_2.add_in("value_INTEGER", 123)
     task_2.add_in("value_FLOAT", 0.1)
     task_2.add_in("value_BOOLEAN", True)
     task_2.add_out("value_EMPTY")

     # Task 1 is the same as task 2

     # Other parameter types corresponding to DolphinScheduler
     task_3 = Shell(
         name="task_3",
         command="echo hello pydolphinscheduler",
         input_params={
             "value_LONG": ParameterType.LONG("1000000"),
             "value_DATE": ParameterType.DATE("2022-01-02"),
             "value_TIME": ParameterType.TIME("2022-01-01"),
             "value_TIMESTAMP": ParameterType.TIMESTAMP(123123124125),
             "value_LIST": ParameterType.LIST("123123"),
         },
         output_params={
             "output_INTEGER": ParameterType.INTEGER(100),
             "output_LIST": ParameterType.LIST(),
         },
     )

     workflow.submit()
 # [end workflow_declare]

Pull Request checklist

I confirm that the following checklist has been completed.

• Add/Change test cases for the changes.
• Add/Change the related documentation, should also change docs/source/config.rst when you change file default_config.yaml.
• (Optional) Add your change to UPDATING.md when it is an incompatible change.

[zhongjiajie]

please remember change the example doc in the end

[zhongjiajie]

Others LGTM

[zhongjiajie]

LGTM