feat: 添加数据库管理平台MCP Server

新增lzwcai-mcp-agile-db项目，提供数据库管理、表操作、数据CRUD、
API密钥管理、技能与工具管理等功能。

包含33个工具：
- 数据源管理：创建、更新、删除数据源
- 数据库与表管理：表结构操作、数据查询等
- API密钥管理：密钥创建、权限管理等
- 技能与工具管理：SQL工具创建、配置更新等
- 数据导入和SQL执行功能

添加了完整的README文档说明安装使用方法，
以及Python 3.12版本支持和基本项目结构。

lzwcai_mcp_agile_db/pyproject.toml

@@ -0,0 +1,34 @@
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[project]
+name = "lzwcai-mcp-agile-db"
+version = "0.1.0"
+description = "MCP server for database management platform with 33 tools for datasource, table, data, API key, and skill management"
+readme = "README.md"
+requires-python = ">=3.10"
+license = {text = "MIT"}
+authors = [
+    {name = "lzwcai", email = "your-email@example.com"},
+]
+keywords = ["mcp", "database", "agile", "server"]
+classifiers = [
+    "Development Status :: 3 - Alpha",
+    "Intended Audience :: Developers",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
+]
+dependencies = [
+    "httpx>=0.28.1",
+    "mcp[cli]>=1.10.1",
+]
+
+[project.scripts]
+lzwcai-mcp-agile-db = "lzwcai_mcp_agile_db.server:main"
+
+[tool.hatch.build.targets.wheel]
+packages = ["lzwcai_mcp_agile_db"]