Is your feature request related to a problem? Please describe.
Sometimes we need to load the contents of a file into SSM Parameter Store, e.g. GCP credentials files.
Describe the solution you'd like
If the source .env/.json file contains a path, the contents of that path should be stored in SSM Parameter Store.
This feature would NOT be the default, but could be turned on with --get-file-contents
Describe alternatives you've considered
ClickOps
Additional context
n/a