feat(vector-store): Add Databricks Mosaic AI vector store support (#3325)

docs/changelog.mdx

@@ -7,6 +7,24 @@ mode: "wide"
 <Tabs>
 <Tab title="Python">
 
+
+**New Features:**
+- **Databricks Vector Search:** Added comprehensive support for Databricks Vector Search as a vector store provider
+  - Delta Sync Index integration with automatic synchronization from Delta tables
+  - Dual authentication support (Service Principal and Personal Access Token)
+  - Both STANDARD and STORAGE_OPTIMIZED endpoint types supported
+  - Self-managed and Databricks-computed embedding options
+  - Auto-creation of endpoints and indexes when not present
+  - Unity Catalog integration for secure data governance
+
+**Improvements:**
+- **Documentation:**
+  - Added detailed Databricks Vector Search configuration guide with authentication methods
+  - Updated vector databases overview to include Databricks option
+  - Enhanced vector store documentation with embedding configuration examples
+
+</Update>
+
 <Update label="2025-07-24" description="v0.1.115">
 
 **New Features & Updates:**