Add ability to check kwargs type annotation

pylint/plugins/hass_enforce_type_hints.py

@@ -22,6 +22,7 @@ class TypeHintMatch:
     function_name: str
     return_type: list[str] | str | None | object
     arg_types: dict[int, str] | None = None
+    kwargs_type: str | None = None
     check_return_type_inheritance: bool = False
 
 
@@ -613,7 +614,7 @@ class HassTypeHintChecker(BaseChecker):  # type: ignore[misc]
     priority = -1
     msgs = {
         "W7431": (
-            "Argument %d should be of type %s",
+            "Argument %s should be of type %s",
             "hass-argument-type",
             "Used when method argument type is incorrect",
         ),
@@ -709,6 +710,16 @@ class HassTypeHintChecker(BaseChecker):  # type: ignore[misc]
                         args=(key + 1, expected_type),
                     )
 
+        # Check that kwargs is correctly annotated.
+        if match.kwargs_type and not _is_valid_type(
+            match.kwargs_type, node.args.kwargannotation
+        ):
+            self.add_message(
+                "hass-argument-type",
+                node=node,
+                args=(node.args.kwarg, match.kwargs_type),
+            )
+
         # Check the return type.
         if not _is_valid_return_type(match, node.returns):
             self.add_message(