[DOC]Optimize Seatunnel Document Structure

[misi1987107]

Purpose of this pull request

Optimize document structure

Does this PR introduce any user-facing change?

How was this patch tested?

Check list

• If any new Jar binary package adding in your PR, please add License Notice according
  New License Guide
• If necessary, please update the documentation to describe the new feature. https://github.com/apache/seatunnel/tree/dev/docs
• If necessary, please update incompatible-changes.md to describe the incompatibility caused by this PR.
• If you are contributing the connector code, please check that the following files are updated:
  1. Update plugin-mapping.properties and add new connector information in it
  2. Update the pom file of seatunnel-dist
  3. Add ci label in label-scope-conf
  4. Add e2e testcase in seatunnel-e2e
  5. Update connector plugin_config

[davidzollo]

Happy new year!

CI failed.

[zhangshenghang]

please resolve conflicts

[misi1987107]

The Document Structure Design
docs/en/
├── introduction/ 核心概念 (13 个文件)
│ ├── about.md ✓ 项目介绍
│ ├── architecture.md ⚠️ TODO
│ └── concepts/ 11 个核心概念
│
├── getting-started/ 快速开始 (7 个文件)
│ ├── locally/ 本地部署 (4 个)
│ ├── docker/ Docker 部署 (1 个)
│ └── kubernetes/ K8s 部署 (2 个)
│
├── connectors/ 连接器 (157+ 个文件)
│ ├── overview.md ✓ 能力矩阵
│ ├── source/ 79 个 Source 连接器
│ ├── sink/ 78 个 Sink 连接器
│ ├── common-options/ 通用选项 (2 个)
│ ├── formats/ 数据格式 (8 个)
│ └── changelog/ 变更日志 (100+ 个)
│
├── transforms/ 数据转换 (21 个文件)
│ ├── common-options.md ✓ 通用选项
│ ├── sql.md ✓ SQL 转换
│ ├── filter.md ✓ 过滤
│ ├── field-mapper.md ✓ 字段映射
│ └── ... (17 个其他转换)
│
├── engines/ 执行引擎 (21 个文件)
│ ├── flink.md ⚠️ Flink (文档少)
│ ├── spark.md ⚠️ Spark (文档少)
│ └── zeta/ SeaTunnel Engine (19 个)
│ ├── about.md ✓ 介绍
│ ├── deployment.md ✓ 部署
│ ├── rest-api-v1.md ✓ API
│ └── ... (16 个其他)
│
├── operations/ 运维管理 (15 个文件)
│ ├── deployment-architecture/ 部署架构 (3 个)
│ ├── management/ 管理 (3 个)
│ ├── observability/ 可观测性 (2 个)
│ ├── performance-tuning/ 性能调优 (3 个)
│ ├── security/ 安全 (2 个)
│ └── troubleshooting/ 故障排查 (2 个)
│
├── developer/ 开发者指南 (12 个文件)
│ ├── contribution-guide.md ⚠️ TODO
│ ├── e2e-testing.md ✓ E2E 测试
│ ├── architecture/ 架构 (2 个)
│ └── connector-development/ 连接器开发 (5 个)
│
├── best-practies/
│ ├── cdc-sync.md CDC同步场景
│
└── faq/ 常见问题 (2 个文件)
├── general.md ✓ 常见问题
└── troubleshooting-shortcuts.md ✓ 快捷方式

[davidzollo]

Here is my suggestions:

1. Just keep one faq.md, and delete troubleshooting-shortcuts.md and general.md.
2. The entire operations directory can be deleted, and we can add content to it later.