update databricks page (#1674)

* update databricks page

* Update Databricks page content and layout

- Combined middle_text and integrations sections into unified section
- Updated CTA to use 'See Documentation' instead of 'Book a call'
- Removed top documentation button from integrations header
- Added comprehensive Databricks integration description
- Narrowed text column width for better readability
- Removed redundant middle_text.py file
- Updated page flow: hero -> video -> integrations (with text + diagram) -> security -> cta

* Refine Databricks integrations section content and styling

- Left-align all text content for better readability
- Convert AI services list to bullet points (SQL Warehouse, Unity Catalog, Genie AI, OAuth)
- Remove redundant 'This integration enables you to:' section
- Remove bold styling from final paragraph for consistent text weight
- Update R logo card styling with violet theme (border and background)

* push

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Co-authored-by: Alek Petuskey <[email protected]>

Author: carlosabadia