Analyse altair (#2005)

## Changes
whitelist altair

### 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

@@ -17,6 +17,51 @@
       }
     ]
   },
+  "altair": {
+    "altair": [],
+    "altair._magics": [],
+    "altair.expr": [],
+    "altair.expr.consts": [],
+    "altair.expr.core": [],
+    "altair.expr.funcs": [],
+    "altair.jupyter": [],
+    "altair.jupyter.jupyter_chart": [],
+    "altair.utils": [],
+    "altair.utils._dfi_types": [],
+    "altair.utils._importers": [],
+    "altair.utils._show": [],
+    "altair.utils._transformed_data": [],
+    "altair.utils._vegafusion_data": [],
+    "altair.utils.compiler": [],
+    "altair.utils.core": [],
+    "altair.utils.data": [],
+    "altair.utils.deprecation": [],
+    "altair.utils.display": [],
+    "altair.utils.execeval": [],
+    "altair.utils.html": [],
+    "altair.utils.mimebundle": [],
+    "altair.utils.plugin_registry": [],
+    "altair.utils.save": [],
+    "altair.utils.schemapi": [],
+    "altair.utils.selection": [],
+    "altair.utils.server": [],
+    "altair.utils.theme": [],
+    "altair.vegalite": [],
+    "altair.vegalite.api": [],
+    "altair.vegalite.data": [],
+    "altair.vegalite.display": [],
+    "altair.vegalite.schema": [],
+    "altair.vegalite.v5": [],
+    "altair.vegalite.v5.api": [],
+    "altair.vegalite.v5.compiler": [],
+    "altair.vegalite.v5.data": [],
+    "altair.vegalite.v5.display": [],
+    "altair.vegalite.v5.schema": [],
+    "altair.vegalite.v5.schema.channels": [],
+    "altair.vegalite.v5.schema.core": [],
+    "altair.vegalite.v5.schema.mixins": [],
+    "altair.vegalite.v5.theme": []
+  },
   "aniso8601": {
     "aniso8601": []
   },
@@ -19850,4 +19895,4 @@
     "zipp.compat.py310": [],
     "zipp.glob": []
   }
-}
+}