Feat: Add reCAPTCHA to Faucet Claim Process

[tesol2y090]

Changes

• Added Google reCAPTCHA v2 (Checkbox) integration
• Implemented client-side reCAPTCHA verification
• Added server-side reCAPTCHA token validation
• Added environment variable configuration for reCAPTCHA keys
• Added error handling for reCAPTCHA verification
• Added reCAPTCHA reset after successful claims

Implementation Details

1. Client-side:

   • Added react-google-recaptcha package
   • Implemented reCAPTCHA checkbox component
   • Added token verification before API calls
   • Added error handling and user feedback

2. Server-side:

   • Added reCAPTCHA token verification endpoint
   • Added error handling for invalid tokens
   • Integrated verification with existing faucet logic

Environment Variables

Add the following to your .env.local:

NEXT_PUBLIC_RECAPTCHA_SITE_KEY=your_site_key_here
RECAPTCHA_SECRET_KEY=your_secret_key_here

Notes

• Requires reCAPTCHA v2 keys from Google reCAPTCHA admin console
• Make sure to add your domain (including localhost) to allowed domains in reCAPTCHA settings
• The site key should start with 6L for reCAPTCHA v2

Screenshots

Close #15