feat(03-06): add Databricks, Snowflake, Oracle GenAI, HPE GreenLake Tier 9 providers

- Databricks dapi-prefixed high-confidence regex pattern
- Snowflake/Oracle/HPE keyword-only detection
- Completes PROV-09 (8 Tier 9 enterprise providers)

providers/hpe-greenlake.yaml

@@ -0,0 +1,18 @@
+format_version: 1
+name: hpe-greenlake
+display_name: HPE GreenLake for LLMs
+tier: 9
+last_verified: "2026-04-05"
+keywords:
+  - "hpe-greenlake"
+  - "greenlake"
+  - "HPE_CLIENT_ID"
+  - "HPE_CLIENT_SECRET"
+  - "common.cloud.hpe.com"
+  - "hpe-ai"
+verify:
+  method: GET
+  url: ""
+  headers: {}
+  valid_status: []
+  invalid_status: []