feat(ui): FRO-36 PWA

Added Knockoutwhist with manifest + worker to be downloadable. Offline screen can be improved

src/views/OfflineView.vue

@@ -0,0 +1,9 @@
+<script setup lang="ts">
+
+</script>
+<template>
+<h1> DU BIST OFFLINE!!!</h1>
+</template>
+<style scoped>
+
+</style>