Adding custom component styling through archetype support (#1340)

Co-authored-by: Muskan Gupta <muskgupta@Muskans-MacBook-Pro.local>

Author: muskgupta

src/main/archetype/ui.apps/src/main/content/jcr_root/apps/__appId__/components/adaptiveForm/formcontainer/_cq_themeConfig/.content.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<jcr:root xmlns:jcr="http://www.jcp.org/jcr/1.0" xmlns:nt="http://www.jcp.org/jcr/nt/1.0"
+    jcr:primaryType="nt:unstructured"
+    componentId="af2_guideContainer"
+    label="${appTitle} Container"/>

src/main/archetype/ui.apps/src/main/content/jcr_root/apps/__appId__/components/adaptiveForm/formcontainer/_cq_themeConfig/items/.content.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<jcr:root xmlns:jcr="http://www.jcp.org/jcr/1.0" xmlns:nt="http://www.jcp.org/jcr/nt/1.0" xmlns:sling="http://sling.apache.org/jcr/sling/1.0"
+    jcr:primaryType="nt:unstructured"
+    sling:resourceSuperType="core/fd/components/form/container/v2/container/cq:themeConfig/items"/>