Add GenLayer Points Portal Early Access Guide

[earnadvise]

This PR adds a guide to help users get started with the GenLayer Points Portal, which is currently live with limited slots.

The content explains how to join, earn points, and position early within the ecosystem.
What’s Included
Step-by-step onboarding guide (wallet connect, profile setup, community join)
Instructions for earning points (referrals, missions, contributions)
Testnet interaction guide (faucet, contract deployment, debugging)
Overview of participation paths:
Builders (smart contracts / dApps)
Validators (node waitlist)
Community contributors
Why This Matters

GenLayer introduces AI-integrated smart contracts with verifiable outputs.
Early participation is important due to capped points and long-term referral rewards (10% ongoing).

This guide helps new users quickly understand and engage with the ecosystem.

Checklist
Content is clear and beginner-friendly
Links and steps verified
No sensitive data included
here are important links
Join here: https://portal.genlayer.foundation/?ref=INBICYXC
Connect wallet and complete profile
• Claim test tokens : http://testnet-faucet.genlayer.foundation
• Deploy contracts :http://studio.genlayer.com/contracts