Added AppDeploy skill for deploying apps directly from Codex

[avimak]

Summary

This PR introduces the curated appdeploy skill, which enables Codex to deploy and manage web apps using AppDeploy.

Capabilities

• Deploy web apps, including full-stack apps, to a public URL.
• Manage the app lifecycle, including status checks, versioning, and code management.
• Support source-level inspection for debugging and iteration.
• Provide a structured and repeatable deployment flow aligned with AppDeploy tool contracts.

Example:
Prompt: "Build a tic tac toe game and deploy it."
Result: A live URL to the deployed game app.