[mirotalksfu] - add API join endpoint + swagger doc

app/api/meeting/meeting.sh

@@ -0,0 +1,9 @@
+#!/bin/bash
+
+API_KEY="mirotalksfu_default_secret"
+MIROTALK_URL="http://localhost:3010/api/v1/meeting"
+
+curl $MIROTALK_URL \
+    --header "authorization: $API_KEY" \
+    --header "Content-Type: application/json" \
+    --request POST