Create a Tutorial for Staking PEO Tokens Locally

[dkrizhanovskyi]

What to Do:
We have code for staking PEO tokens, but no beginner-friendly tutorial. Write a step-by-step guide (as a Markdown file in docs/) showing how someone can:

1. Deploy contracts locally with Hardhat.
2. Mint PEO tokens to a test account.
3. Approve and stake tokens.
4. Check staking rewards.

Suggested Structure:

• "Prerequisites" section (Node.js, npm, Hardhat).
• "Setup" section (cloning repo, installing deps).
• "Deploy & Stake" steps with example commands and expected outputs.
• "Verifying Rewards" section.

Why This Matters:
A tutorial helps new contributors and users quickly understand how to interact with the staking contract, improving onboarding and reducing confusion.

Experience Level:
Beginner to intermediate. Basic familiarity with Hardhat and ERC-20 tokens helpful.