Bottom CTA banner: 'Integrate Bridgelet Today'

[phertyameen]

Issue #5: Bottom CTA banner: 'Integrate Bridgelet Today'

Category: UI/Homepage
Repo: bridgelet (frontend + docs)

Description

Add a full-width CTA banner at the bottom of the homepage linking to the SDK docs and GitHub. Should have a contrasting background, headline, and two buttons: 'View on GitHub' and 'Read the Docs'.

Acceptance Criteria

• Implementation complete
• Tests passing
• Docs updated
• Reviewed and merged