feat(scaffolder): config-driven template groups and swappable TemplateCard (#34147)

* feat(scaffolder): config-driven template groups and swappable TemplateCard

Signed-off-by: benjdlambert <ben@blam.sh>

* refactor(scaffolder): keep createGroupsWithOther internal

Signed-off-by: benjdlambert <ben@blam.sh>

* docs(scaffolder): fix sub-page extension ID in changeset

Signed-off-by: benjdlambert <ben@blam.sh>

* address PR review feedback

Signed-off-by: benjdlambert <ben@blam.sh>

* split TemplateCard swappable contract from legacy props

Signed-off-by: benjdlambert <ben@blam.sh>

* address review feedback: dedupe tags, defensive groups copy, doc clarifications

Signed-off-by: benjdlambert <ben@blam.sh>

* regenerate api reports

Signed-off-by: benjdlambert <ben@blam.sh>

* align docs and changeset with actual default group titles

Signed-off-by: benjdlambert <ben@blam.sh>

* regen api reports after rebase

Signed-off-by: benjdlambert <ben@blam.sh>

---------

Signed-off-by: benjdlambert <ben@blam.sh>

app-config.yaml

@@ -100,6 +100,16 @@ app:
             - custom:
                 title: Custom
 
+    - sub-page:scaffolder/templates:
+        config:
+          groups:
+            - title: Recommended Services
+              filter:
+                spec.type: service
+            - title: Documentation
+              filter:
+                spec.type: documentation
+
     # Entity page cards
     - entity-card:catalog/about:
         config: