feat: rewrite to use app config and rework docs (#143)

Co-authored-by: Daniel Roe <daniel@roe.dev>
Co-authored-by: Sébastien Chopin <seb@nuxt.com>

docs/composables/useComponentMeta.ts

@@ -0,0 +1,19 @@
+const useComponentsMetaState = () => useState('components-meta', () => ({}))
+
+export async function fetchComponentMeta (name: string) {
+  const state = useComponentsMetaState()
+
+  if (state.value[name]?.then) {
+    await state.value[name]
+    return state.value[name]
+  }
+  if (state.value[name]) { return state.value[name] }
+
+  // Store promise to avoid multiple calls
+  state.value[name] = $fetch(`/api/component-meta/${name}`).then((meta) => {
+    state.value[name] = meta
+  })
+
+  await state.value[name]
+  return state.value[name]
+}