full-install: add letsencrypt cert gen script

docker-compose/full-install/advanced.md

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+# Advanced operations 
+
+
+## Restarting containers 
+
+## Upgrade nocodb instance 
+
+## Enable SSL
+In order to enable SSL for incoming https requests, you will need to have certs which is
+private-key public-key pair
+### letsencrypt for generating certificates 
+### Bring your own certificates 
+### self signed certificates 
+
+## Database pasword rotation 
+
+## nginx configurations 
+
+## Add Node 
+
+## Minio integration for resources
+
+## Enable scheduled backups to run nightly on all your instances.