Migrate useful content from registry/index into static-resources.md

Author: stevepiercy

docs/classic-ui/registry/index.md

@@ -2,3 +2,16 @@
 
 # Static Resources
 
+We often want to ship a website with a static resource, such as an image, icon, CSS, or JavaScript file.
+For this, we need to register static resources.
+
+
+(classic-ui-static-resources-available-attributeslabel)=
+
+## Available attributes
+
+
+(classic-ui-static-resources-loading-order-label)=
+
+## Loading order of resources
+