Implement unified browser downloader for Puppeteer and Playwright

.gitignore

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+node_modules/
+dist/
+*.log
+.DS_Store
+.idea/
+.vscode/
+*.swp
+*.swo
+*~
+.cache/
+tmp/
+temp/

.npmrc

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+shamefully-hoist=true
+strict-peer-dependencies=false

.prettierrc

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+{
+  "semi": true,
+  "trailingComma": "es5",
+  "singleQuote": true,
+  "printWidth": 100,
+  "tabWidth": 2,
+  "useTabs": false,
+  "arrowParens": "always",
+  "endOfLine": "lf"
+}

LICENSE

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+MIT License
+
+Copyright (c) 2024 KarinJS
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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 # shared-browser
+
 A unified browser downloader for Puppeteer and Playwright.
+
+## Features
+
+- 🚀 Unified browser management for both Puppeteer and Playwright
+- 📦 Browser download and caching with official logic
+- 🔍 Browser discovery and path resolution
+- 💾 Efficient browser caching mechanism
+- 🌐 Support for multiple platforms (Windows, macOS, Linux)
+- 📝 Full TypeScript support with TSDoc comments
+
+## Installation
+
+```bash
+npm install @karinjs/shared-browser
+# or
+pnpm add @karinjs/shared-browser
+# or
+yarn add @karinjs/shared-browser
+```
+
+## Requirements
+
+- Node.js >= 18.0.0
+- pnpm 9.x (recommended for development)
+
+## Usage
+
+### For Puppeteer
+
+```typescript
+import { puppeteer } from '@karinjs/shared-browser';
+
+// Find installed browser
+const browserPath = await puppeteer.findBrowser();
+
+// Get download path
+const downloadPath = puppeteer.getDownloadPath();
+
+// Download browser
+await puppeteer.downloadBrowser({
+  revision: '123456',
+  progressCallback: (progress) => {
+    console.log(`Downloaded: ${progress}%`);
+  }
+});
+```
+
+### For Playwright
+
+```typescript
+import { playwright } from '@karinjs/shared-browser';
+
+// Find installed browser
+const browserPath = await playwright.findBrowser('chromium');
+
+// Get download path
+const downloadPath = playwright.getDownloadPath('chromium');
+
+// Download browser
+await playwright.downloadBrowser({
+  browser: 'chromium',
+  progressCallback: (progress) => {
+    console.log(`Downloaded: ${progress}%`);
+  }
+});
+```
+
+## License
+
+MIT