feat(server): add morph doc edit tool (#12789)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

- **New Features**
- Introduced support for the Morph provider in the copilot module,
enabling integration with the Morph LLM API.
- Added a new document editing tool that allows users to propose and
apply edits to existing documents via AI assistance.
- **Configuration**
- Added configuration options for the Morph provider in both backend and
admin interfaces.
- **Enhancements**
- Expanded tool support to include document editing capabilities within
the copilot feature set.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/backend/server/package.json

@@ -32,6 +32,7 @@
     "@ai-sdk/google": "^1.2.18",
     "@ai-sdk/google-vertex": "^2.2.23",
     "@ai-sdk/openai": "^1.3.22",
+    "@ai-sdk/openai-compatible": "^0.2.14",
     "@ai-sdk/perplexity": "^1.1.9",
     "@apollo/server": "^4.11.3",
     "@aws-sdk/client-s3": "^3.779.0",