ANS-15 docs(quick-start-guide) Add Beginner-Friendly QUICK_START_GUIDE.md for ANS SDKs

This PR introduces a new QUICK_START_GUIDE.md to help developers get up and running with the ANS SDKs quickly and easily.

What's included:

JavaScript/TypeScript SDK:

Installation steps

Agent registration & lookup examples (programmatic + CLI)

Java SDK: Two easy-to-follow options

Maven Dependency Approach: Includes a ready-to-use pom.xml and Main.java example

Git Clone + Local Build Approach: Steps for building the SDK locally and using the CLI tool directly from the JAR

Key Handling Guidance: Best practices for securely managing cryptographic keys

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Provides beginner-friendly, step-by-step instructions

Includes copy-paste-ready code snippets and commands

Ensures developers can start integrating ANS agents in minutes

Author: gulercan