refactor(app)!: move components & composables to old folders

Author: zzhenryquezz

packages/app/README.md

@@ -0,0 +1,9 @@
+<script setup lang="ts">
+const theme = useTheme()
+
+</script>
+<template>
+    <div>
+        <slot />
+    </div>
+</template>

packages/app/src/components/IsApp.vue

@@ -0,0 +1,7 @@
+export function useTheme () {
+    const dark = ref(true)
+
+    return {
+        dark
+    }
+}