refactor: rename logic to composables

src/components/Footer.vue

@@ -1,5 +1,5 @@
 <script setup lang="ts">
-import { isDark, toggleDark } from '~/logic'
+import { isDark, toggleDark } from '~/composables'
 </script>
 
 <template>

src/pages/README.md

@@ -10,11 +10,11 @@ Check out [`vite-plugin-pages`](https://github.com/hannoeru/vite-plugin-pages) f
 For example, instead of having
 
 ```ts
-import { isDark } from '../../../../logic'
+import { isDark } from '../../../../composables'
 ```
 
 now, you can use
 
 ```ts
-import { isDark } from '~/logic'
+import { isDark } from '~/composables'
 ```