build: add netlify-plugin-hugo-cache-resources plugin

Author: gcushen

netlify.toml

@@ -14,3 +14,8 @@
 
 [context.branch-deploy]
   command = "hugo --gc --minify -b $DEPLOY_PRIME_URL"
+
+[[plugins]]
+  package = "netlify-plugin-hugo-cache-resources"
+  [plugins.inputs]
+    debug = true