docs: 添加社区项目 MR3A

[originalsage]

Summary by Sourcery

Documentation:

• 在主 README 和英文 README 中为 MR3A（《忍者必须死 3》助手）社区项目添加徽章和描述文档。

Original summary in English

Summary by Sourcery

Documentation:

• Document the MR3A (Ninja Must Die 3 Assistant) community project with badges and description in the main README and English README.

[sourcery-ai]

Hey - 我在这里给出了一些总体反馈：

• 在 README.md 中，MR3A 的描述行缩进空格比相邻的 MALW/AUTO-MAS 描述行更少；请调整缩进，使项目符号列表的渲染保持一致。

Prompt for AI Agents

Please address the comments from this code review:

## Overall Comments
- In README.md the MR3A description line is indented with fewer spaces than the neighboring MALW/AUTO-MAS descriptions; align the indentation so the bullet list renders consistently.

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Original comment in English

Hey - I've left some high level feedback:

• In README.md the MR3A description line is indented with fewer spaces than the neighboring MALW/AUTO-MAS descriptions; align the indentation so the bullet list renders consistently.

Prompt for AI Agents

Please address the comments from this code review:

## Overall Comments
- In README.md the MR3A description line is indented with fewer spaces than the neighboring MALW/AUTO-MAS descriptions; align the indentation so the bullet list renders consistently.

---

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[Windsland52]

按顺序吧，放auto mas后面

[originalsage]

已调整