add option to decrease verbosity of hs fetch, for CI/CD usage

[techieshark]

Description and Context

hs fetch emits one line of output for every file/folder it writes. This seems excessive for CI/CD use cases; it'd be great to have an option to decrease verbosity.

This with hs version 4.0.0.

Steps to reproduce

1. Run hs fetch command to fetch files
2. Observe one line of output per file/folder

Expected behavior

There is some way to decrease the output volume; perhaps a --quiet option.

Screenshots

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