docs: Add Bubble integration docs for workflows and notifications

[daveomri]

Summary

Created new Bubble integration documentation for the workflows-and-notifications directory, enabling users to automate workflows and set up notifications using Apify Actors within Bubble applications.

What's Added

• New Bubble integration guide: Complete documentation covering installation, configuration, and workflow automation
• Structured workflow examples: Practical use cases including price monitoring, lead generation, and content aggregation
• Proper scope alignment: Focused on workflow automation and notifications to match the directory's purpose
• Consistent formatting: Follows the same structure and length as other integration docs in the directory (90 lines, matching the 44-143 line range)
• Technical accuracy:
  • Correct API token storage practices (User data type with Privacy rules)
  • Accurate data call descriptions (List User Tasks, List Actor Runs, List Store Actors)
  • Proper Bubble development terminology and best practices

Key Features Documented

• Plugin installation from Bubble marketplace
• API token configuration and security
• Automated workflow triggers (form submissions, scheduled events, etc.)
• Data display and management
• Troubleshooting common issues

Context

This documentation is being created by DXHeroes and Applifting as part of developing the official Bubble plugin for Apify. The guide enables no-code developers to integrate Apify's web scraping and automation capabilities directly into their Bubble applications.

Testing

• Verified all internal links work correctly
• Confirmed image references point to existing files
• Reviewed content accuracy for Bubble development practices
• Ensured consistency with other workflow integration docs