Add Socketio support

and modify some websocket and sse code to pick up common function and component

components/realtime/log.vue

@@ -0,0 +1,58 @@
+<template>
+  <div>
+    <label for="log">{{ title }}</label>
+    <div name="log" class="realtime-log" ref="log">
+      <span v-if="log">
+        <span v-for="(logEntry, index) in log" :style="{ color: logEntry.color }" :key="index"
+          >@ {{ logEntry.ts }}{{ getSourcePrefix(logEntry.source) }}{{ logEntry.payload }}</span
+        >
+      </span>
+      <span v-else>{{ $t("waiting_for_connection") }}</span>
+    </div>
+  </div>
+</template>
+
+<style scoped lang="scss">
+div.realtime-log {
+  margin: 4px;
+  padding: 8px 16px;
+  width: calc(100% - 8px);
+  border-radius: 8px;
+  background-color: var(--bg-dark-color);
+  color: var(--fg-color);
+  height: 256px;
+  overflow: auto;
+
+  &,
+  span {
+    font-size: 16px;
+    font-family: "Roboto Mono", monospace;
+    font-weight: 400;
+  }
+
+  span {
+    display: block;
+    white-space: pre-wrap;
+    word-wrap: break-word;
+    word-break: break-all;
+  }
+}
+</style>
+
+<script>
+import { getSourcePrefix } from "~/functions/utils/string"
+
+export default {
+  props: ["log", "title"],
+  methods: {
+    getSourcePrefix,
+  },
+  updated: function() {
+    this.$nextTick(function() {
+      if (this.$refs.log) {
+        this.$refs.log.scrollBy(0, this.$refs.log.scrollHeight + 100)
+      }
+    })
+  },
+}
+</script>