[mirotalksfu] - add API join endpoint + swagger doc

app/api/join/join.js

@@ -0,0 +1,28 @@
+'use strict';
+
+const fetch = require('node-fetch');
+
+const API_KEY = 'mirotalksfu_default_secret';
+const MIROTALK_URL = 'http://localhost:3010/api/v1/join';
+
+function getResponse() {
+    return fetch(MIROTALK_URL, {
+        method: 'POST',
+        headers: {
+            authorization: API_KEY,
+            'Content-Type': 'application/json',
+        },
+        body: JSON.stringify({
+            room: 'test',
+            name: 'mirotalksfu',
+            audio: true,
+            video: true,
+        }),
+    });
+}
+
+getResponse().then(async (res) => {
+    console.log('Status code:', res.status);
+    const data = await res.json();
+    console.log('join:', data.join);
+});