Added method to authenticate GDPR Webhook Request

What's Changed

• Changed Webhook Auth Logic by @dev-prakhar in #2
• Added GDPR Webhook Request Verification by @dev-prakhar in #3

Full Changelog: 0.0.2...0.0.4

Webhook Authentication Logic Change

Full Changelog: 0.0.2...0.0.3

Removed Spaces while Converting to JSON

0.0.2

Fixed JSON Dumps Logic

SmoothCode Auth Library Released

0.0.1

Added Coverage