feat: scaffold mvp shell and content runtime

js/content/registry/bundle-resolver.js

@@ -0,0 +1,24 @@
+export function createBundleResolver(cityRegistry) {
+  return {
+    resolveCityBundle(cityId) {
+      const city = cityRegistry.getCity(cityId)
+
+      return city ? city.bundle : null
+    },
+    ensureCityBundle(cityId) {
+      const bundle = this.resolveCityBundle(cityId)
+
+      if (!bundle) {
+        return null
+      }
+
+      return {
+        cityId,
+        ...bundle,
+        status: 'ready',
+      }
+    },
+  }
+}
+
+export default createBundleResolver