feat(dev): enable local debugging with Delve and Docker Compose

[Zwen092]

Debugging the service while it's running inside a Docker container can be a complex and manual process, which slows down development and troubleshooting.

This change introduces a dedicated Docker Compose setup that streamlines local debugging using Delve. By running a single command, developers can now start the service in debug mode and easily attach a debugger from their IDE (like VS Code or GoLand).

This significantly improves the developer experience (DX) by providing a simple and repeatable debugging workflow.

Detailed step by step explanation is provided both in the Chinese and English README file

What type of PR is this?

It's a feat

Check the PR title.

• This PR title match the format: <type>(optional scope): <description>
• The description of this PR title is user-oriented and clear enough for others to understand.
• Add documentation if the current PR requires user awareness at the usage level.

(Optional) Translate the PR title into Chinese.

feat(开发者体验): 增加后端本地调试指南

(Optional) More detailed description for this PR(en: English/zh: Chinese).

en:
zh(optional):

(Optional) Which issue(s) this PR fixes:

N/A, it's a new feature

[CLAassistant]

All committers have signed the CLA.