Add docs for cloud connections feature in EA (#1872)

Co-authored-by: William Perron <hey@wperron.io>
Co-authored-by: Jo Franchetti <jofranchetti@gmail.com>

Author: 3 people

deploy/early-access/_data.ts

@@ -45,6 +45,10 @@ export const sidebar = [
         title: "Domains",
         href: "/deploy/early-access/reference/domains/",
       },
+      {
+        title: "Cloud Connections",
+        href: "/deploy/early-access/reference/cloud-connections/",
+      },
       {
         title: "Runtime",
         href: "/deploy/early-access/reference/runtime/",