fix: replace deprecated optparse with argparse

[eggplants]

Description

I replaced optparse with argparse and refactored some process to check arguments.

Breaking change: Status code 4 no longer occurs because argparse checks whether an argument is passed.

Fixes #3912

Type of change

• [x] New feature (change which adds functionality).
• [x] Refactor (restructures existing code).

Checklist

PR will not be merged until all steps are complete.

• [x] This pull request links to an issue.
• [x] This pull request uses the develop branch as its base.
• [x] This pull request Subject follows the Conventional Commits standard.
• [x] This code follows the style guidelines of this project.
• [x] I have performed a self-review of my code.
• [x] I have checked that this code is commented where required.
• [x] I have provided a detailed with enough description of this PR.
• [x] I have checked If documentation needs updating.
  • https://github.com/GameServerManagers/LinuxGSM-Dev-Docs/pull/2
  • https://github.com/GameServerManagers/LinuxGSM-Docs/pull/84