Schemachange render should have option to just spit out content of file

[mayur0207]

Is your feature request related to a problem? Please describe.

I'm planning to use `schemachange render' command, to find out SQL errors part of CiCd, before executing the script in snowflake.
But it also prints below extra messages, which is making it challenging to pass output to some other tool such as "sqlfluff parse"

schemachange version: 3.6.1
Using config file: ./schemachange-config.yml
Using root folder /cicd-demo
Using variables:
  xyz: value
  abc: value2

Checksum f9d7388143bf1XYZ

Describe the solution you'd like
There should be config option to disable extra print messages from "schemachange render" command

Describe alternatives you've considered
none

Additional context
Add any other context or screenshots about the feature request here.