whitelist dbtunnel (#2041)

## Changes
whitelist dbtunnel

### Linked issues
Progresses #1901 

### Functionality 
None

### Tests
- [x] manually tested

---------

Co-authored-by: Eric Vergnaud <[email protected]>

src/databricks/labs/ucx/source_code/known.json

@@ -1692,6 +1692,44 @@
     "dbldatagen.text_generators": [],
     "dbldatagen.utils": []
   },
+  "dbtunnel": {
+    "dbtunnel": [],
+    "dbtunnel.arize_phoenix_ui": [],
+    "dbtunnel.bokeh": [],
+    "dbtunnel.chainlit": [],
+    "dbtunnel.cli": [],
+    "dbtunnel.cli.cli": [],
+    "dbtunnel.code_server": [],
+    "dbtunnel.dash": [],
+    "dbtunnel.fastapi": [],
+    "dbtunnel.flask": [],
+    "dbtunnel.gradio": [],
+    "dbtunnel.ngrok": [],
+    "dbtunnel.nicegui": [],
+    "dbtunnel.ray": [],
+    "dbtunnel.relay": [],
+    "dbtunnel.shiny": [],
+    "dbtunnel.solara": [],
+    "dbtunnel.stable_diffusion_ui": [],
+    "dbtunnel.streamlit": [],
+    "dbtunnel.tunnels": [],
+    "dbtunnel.utils": [],
+    "dbtunnel.uvicorn": [],
+    "dbtunnel.vendor": [],
+    "dbtunnel.vendor.asgiproxy": [],
+    "dbtunnel.vendor.asgiproxy.base": [],
+    "dbtunnel.vendor.asgiproxy.config": [],
+    "dbtunnel.vendor.asgiproxy.context": [],
+    "dbtunnel.vendor.asgiproxy.frameworks": [],
+    "dbtunnel.vendor.asgiproxy.proxies": [],
+    "dbtunnel.vendor.asgiproxy.proxies.http": [],
+    "dbtunnel.vendor.asgiproxy.proxies.websocket": [],
+    "dbtunnel.vendor.asgiproxy.simple_proxy": [],
+    "dbtunnel.vendor.asgiproxy.templates": [],
+    "dbtunnel.vendor.asgiproxy.utils": [],
+    "dbtunnel.vendor.asgiproxy.utils.headers": [],
+    "dbtunnel.vendor.asgiproxy.utils.streams": []
+  },
   "dbx": {
     "dbx": [],
     "dbx.api": [],