docs: update docs to v2.2.0

[GixoXYZ]

Description
Update documentations to include all new features and changes from v2.1.0 to v2.2.0.

Information to Include

• Add docs for all the new features.
• Update the docs for all changes made.
• Replace the "Changelog" section with GitHub's changelog.
• Migrate tutorials to Gumroad.
• Update the landing page to include the links from GitHub.

Checklist

• Draft the documentation.
• Review and edit for clarity.
• Ensure consistency with existing documentation.
• Include examples if necessary.
• Update relevant links.