Model Blazor attributes as marking sources

The attributes

- `[Parameter]`
- `[SupplyParameterFromFormAttribute]`
- `[SupplyParameterFromQueryAttribute]`

Tell Blazor to initialize the variables with parameters defined by the
route/form values/query parameters/etc. Values derived from the URI or
form should be classified as `remote` flow sources.

Author: egregius313

csharp/ql/lib/ext/Microsoft.AspNetCore.Components.model.yml

@@ -5,6 +5,9 @@ extensions:
     data:
       - ["Microsoft.AspNetCore.Components", "NavigationManager", True, "get_BaseUri", "", "", "ReturnValue", "remote", "manual"]
       - ["Microsoft.AspNetCore.Components", "NavigationManager", True, "get_Uri", "", "", "ReturnValue", "remote", "manual"]
+      - ["Microsoft.AspNetCore.Components", "ParameterAttribute", False, "", "", "Attribute.Getter", "ReturnValue", "remote", "manual"]
+      - ["Microsoft.AspNetCore.Components", "SupplyParameterFromFormAttribute", False, "", "", "Attribute.Getter", "ReturnValue", "remote", "manual"]
+      - ["Microsoft.AspNetCore.Components", "SupplyParameterFromQueryAttribute", False, "", "", "Attribute.Getter", "ReturnValue", "remote", "manual"]
   - addsTo:
       pack: codeql/csharp-all
       extensible: summaryModel