[Documentation]: teal cheatsheet

[donyunardi]

Feature description

Background

We want to create a concise and user-friendly teal cheatsheet to support new users who are learning or writing teal code. The goal is to provide a handy reference guide covering the most commonly used syntax and features.

Code of Conduct

• I agree to follow this project's Code of Conduct.

Contribution Guidelines

• I agree to follow this project's Contribution Guidelines.

Security Policy

• I agree to follow this project's Security Policy.