refactor(be): adm user cli auth exception refator

[hwantae]

Description

Closes TAS-912 Admin User 모듈과 Client auth 모듈의 exception을 refactoring하였습니다.

Additional context

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• [ ] Read the Contributing Guidelines
• [ ] Read the Contributing Guidelines and follow the Commit Convention
• [ ] Provide a description in this PR that addresses what the PR is solving, or reference the issue that it solves (e.g. fixes #123).
• [ ] Ideally, include relevant tests that fail without this PR but pass with it.