add local env for authorization key in svelte project

Author: fdonnet

svelte-link-ui/.env.local

@@ -7,4 +7,5 @@ REDIS_PORT=6379
 REDIS_HOST=localhost
 BACKEND_PROXY_URL=http://localhost:5235
 TOKEN_STORE_SECRET=Ye6Y36ocA4SaGqYzd0babaHgmqMhVaM2jlkE
-RABBIT_MQ_CONNECTION=amqp://guest:guest@localhost:58842
+RABBIT_MQ_CONNECTION=amqp://guest:guest@localhost:58842
+REGISTER_USER_AUTHORIZATION_KEY=Ye6Y36oddddcA4SaGqYzd0HgmqMhVaM2jlkE