Added config page and store

For the future global sound handling

src/components/config/YrhAudioSlider.vue

@@ -0,0 +1,9 @@
+<script setup lang="ts">
+import YrhButton from '../YrhButton.vue'
+</script>
+
+<template>
+  <YrhButton>
+    <slot />
+  </YrhButton>
+</template>