Move brainblast vue app to ui repository

ui/src/components/MqttButton.vue

@@ -0,0 +1,22 @@
+<template>
+  <v-btn @click="_publishMessage" v-bind="$attrs">
+    <slot/>
+  </v-btn>
+</template>
+
+<script setup>
+  import { publishMessage } from '@/services/mqttService'
+  import { ref, defineProps } from 'vue'
+
+  const props = defineProps({
+    topic: String,
+    message: null
+  })
+
+  const disabled = ref(false)
+
+  const _publishMessage = () => {
+    publishMessage(props.topic, JSON.stringify(props.message))
+    disabled.value = true
+  }
+</script>