refactor: Async scan, code refactoring

[Floodnut]

Update

• Hot Fix
• Release
• Develop
• Others

Description

refactoring for Scan API

• Feature refactor: Async scan, code refactoring #70

Update Summary

• Change AsyncScan Logic to thenCombineAsync.
• Add Async Request method for ApiFeignClient.
• Refactor ScanService.

New/Edited policies

Resolved Issue

Unresolved Issue

Test

• Unit Test
• Build Test

Proof Check

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my feature, policy, or fix is effective and works
• New and existing tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules