feat: Initial NodeByUri logic and frontend

wp-content/themes/moonshine/app/components/builder/BuilderSections.fragment.gql

@@ -0,0 +1,8 @@
+fragment BuilderSections on GroupAbstractBuilder_Fields {
+  sections {
+    __typename
+    ... on GroupAbstractBuilderSectionsTextBlockLayout {
+      ... SectionTextBlock
+    }
+  }
+}

wp-content/themes/moonshine/app/components/builder/BuilderSections.vue

@@ -0,0 +1,9 @@
+<script setup lang="ts">
+import type { BuilderSectionsFragment } from "#graphql/typed-documents";
+
+defineProps<BuilderSectionsFragment>();
+</script>
+
+<template>
+  <pre>{{ sections }}</pre>
+</template>