docs: add Open VSX badges and links to main and extension READMEs

Author: Tcode-Motion

README.md

@@ -19,6 +19,7 @@
 [![Built with Rust](https://img.shields.io/badge/built%20in-Rust-D8B4FE?style=for-the-badge&logo=rust&logoColor=white)](https://www.rust-lang.org/)
 [![Platform](https://img.shields.io/badge/Platform-Cross--Platform-E0F2FE?style=for-the-badge)](https://github.com/Tcode-Motion/techscript/releases)
 [![VS Code Extension](https://img.shields.io/badge/VS%20Code-Extension-007ACC?style=for-the-badge&logo=visualstudiocode&logoColor=white)](https://marketplace.visualstudio.com/items?itemName=tanmoy.techscript)
+[![Open VSX](https://img.shields.io/badge/Open%20VSX-Extension-purple?style=for-the-badge)](https://open-vsx.org/extension/Tcode-Motion/techscript)
 [![PyPI](https://img.shields.io/pypi/v/techscript?style=for-the-badge&color=0DF28B&logo=pypi&logoColor=white)](https://pypi.org/project/techscript/)
 [![Documentation](https://img.shields.io/badge/Docs-Read-059669?style=for-the-badge)](docs/index.md)
 [![Open Issues](https://img.shields.io/github/issues-raw/Tcode-Motion/techscript?style=for-the-badge&color=ef4444&label=Issues)](https://github.com/Tcode-Motion/techscript/issues)
@@ -189,6 +190,7 @@ techscript install
 * **GitHub Repository**: [https://github.com/Tcode-Motion/techscript](https://github.com/Tcode-Motion/techscript)
 * **GitHub Discussions**: [https://github.com/Tcode-Motion/techscript/discussions](https://github.com/Tcode-Motion/techscript/discussions)
 * **VS Code Extension**: [TechScript 2.0 on VS Code Marketplace](https://marketplace.visualstudio.com/items?itemName=tanmoy.techscript)
+* **Open VSX Registry**: [TechScript 2.0 on Open VSX](https://open-vsx.org/extension/Tcode-Motion/techscript)
 * **PyPI Package**: [pypi.org/project/techscript](https://pypi.org/project/techscript/)
 * **YouTube Channel**: [@tcodemotin on YouTube](https://www.youtube.com/@tcodemotin)
 * **Author Profile**: [@Tcode-Motion on GitHub](https://github.com/Tcode-Motion)

editors/TechScript-2.0.vsix

@@ -9,6 +9,7 @@ Syntax highlighting · IntelliSense · Diagnostics · Debugging · Formatting ·
 
 [![Version](https://img.shields.io/badge/version-2.0.0-blue.svg)](https://github.com/Tcode-Motion/techscript/releases)
 [![VS Code](https://img.shields.io/badge/VS%20Code-%5E1.75.0-blue.svg)](https://code.visualstudio.com/)
+[![Open VSX](https://img.shields.io/badge/Open%20VSX-Extension-purple.svg)](https://open-vsx.org/extension/Tcode-Motion/techscript)
 [![License](https://img.shields.io/badge/license-MIT-green.svg)](https://github.com/Tcode-Motion/techscript/blob/main/LICENSE)
 [![GitHub](https://img.shields.io/badge/GitHub-Tcode--Motion%2Ftechscript-black.svg)](https://github.com/Tcode-Motion/techscript)
 
@@ -185,6 +186,8 @@ This extension provides a built-in debug adapter for TechScript. Add a `launch.j
 |---|---|
 | 🌐 Official Website | [techscript.is-a.dev](https://techscript.is-a.dev) |
 | 📦 GitHub Repository | [Tcode-Motion/techscript](https://github.com/Tcode-Motion/techscript) |
+| 🖥️ VS Code Marketplace | [Visual Studio Code Marketplace](https://marketplace.visualstudio.com/items?itemName=tanmoy.techscript) |
+| 🚀 Open VSX Registry | [Open VSX Registry Page](https://open-vsx.org/extension/Tcode-Motion/techscript) |
 | 📥 Releases & Downloads | [GitHub Releases](https://github.com/Tcode-Motion/techscript/releases) |
 | 💬 Discussions & Support | [GitHub Discussions](https://github.com/Tcode-Motion/techscript/discussions) |
 | 🎬 YouTube Channel | [@tcodemotin](https://www.youtube.com/@tcodemotin) |