feat: support WRN imports and dynamic public shell

editors/vscode/src/completion.js

@@ -3,6 +3,13 @@
 const vscode = require("vscode");
 
 const BLOCK_COMPLETIONS = [
+  {
+    label: "import",
+    detail: "WRN server module import",
+    documentation:
+      "Import a package or module before the page, component, or layout declaration for server rendering.",
+    snippet: 'import { ${1:appUrl} } from "${2:@wrnexus/helpers}";\n\n$0',
+  },
   {
     label: "page",
     detail: "WRN page",