feat: add extension point for workspace home page (#21033)

* updates to allow insertion of workspace home sidescroll/table UI

* fix types

* fix User type import

* add welcome message to ui registry

* add extra fields to individual chart/query GET results (for workspace home required info)

* update list view card to support a subtitle

* add id to individual chart fetch

* update chart api test

* another test fix

* fix saved query test

* update extension types + insert point

* fix typing

* fix type name

tests/integration_tests/charts/api_tests.py

@@ -17,6 +17,7 @@
 # isort:skip_file
 """Unit tests for Superset"""
 import json
+import logging
 from io import BytesIO
 from zipfile import is_zipfile, ZipFile
 
@@ -762,7 +763,19 @@ class TestChartApi(SupersetTestCase, ApiOwnersTestCaseMixin, InsertChartMixin):
             "is_managed_externally": False,
         }
         data = json.loads(rv.data.decode("utf-8"))
-        self.assertEqual(data["result"], expected_result)
+        self.assertIn("changed_on_delta_humanized", data["result"])
+        self.assertIn("id", data["result"])
+        self.assertIn("thumbnail_url", data["result"])
+        self.assertIn("url", data["result"])
+        for key, value in data["result"].items():
+            # We can't assert timestamp values or id/urls
+            if key not in (
+                "changed_on_delta_humanized",
+                "id",
+                "thumbnail_url",
+                "url",
+            ):
+                self.assertEqual(value, expected_result[key])
         db.session.delete(chart)
         db.session.commit()