[Enhancement] Unify & clean code style in hubble & client

[returnToInnocence]

SubTask

PS: Since the changes and logic involved are not complex, it is done in one PR according to the way different subtasks commit

• hubble-be format & clean task

  • Correct the copyright format.
    • .py copyright formatting standards need further discussion
      This is due to the File | Settings | Editor | Code Style in IDEA does not include the python files
      My personal thoughts (refer to apache-airflow), copyright and .editorconfig:
      1. indent_size = 4
      2. max_line_length = 110
      3. copyright style in .py may looks like apache-airflow's python file
    • other files
  • Format the hubble-be module
    • File type .java
    • File type .xml
    • File type .properties
    • .py formatting standards need further discussion
      This is due to the File | Settings | Editor | Copyright | Formatting in IDEA does not include the python files
  • Clean up the code.

• hubble-fe format & clean task

  • Formatting standards may require further investigation and discussion

• client format & clean task

• loader format & clean task

• spark-connector format & clean task

• tools format & clean task

Related PR

1. chore(hubble): Enhance code style in hubble #592

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