FieldGuesser support for DataTable / Introspecter

[rvanlaak]

Description
The new DataGrid component is a major improvement over the Datatable.

marmelab/react-admin#10597

Let's make FieldGuesser and related components are compatible.

Example

The component does not use introspection of direct child elements anymore, so that makes rendering and supporting elements like buttons in the table way more flexible.

--- a/pwa/components/admin/domain/Foo.tsx	
+++ b/pwa/components/admin/domain/Foo.tsx
@@ -8,7 +8,7 @@
   ShowGuesser
 } from "@api-platform/admin";
 import {
-  Datagrid,
+  DataTable,
   DateField,
   EditButton,
   ReferenceManyField,
@@ -146,10 +146,12 @@
       </TabbedShowLayout.Tab>
       <TabbedShowLayout.Tab label="foo">
         <ReferenceManyField reference="foo" target="bar">
-          <Datagrid>
-            <TextField source="name"/>
-            <EditButton/>
-          </Datagrid>
+          <DataTable>
+            <FieldGuesser source="name" />
+            <DataTable.Col>
+              <EditButton/>
+            </DataTable.Col>
+          </DataTable>
         </ReferenceManyField>
       </TabbedShowLayout.Tab>

[fzaninotto]

This is already on our roadmap, thanks.