Add "silent" option to cli

[everdimension]

Summary

Solves #347

• Do not write to stdout when "silent" option is on
• Update tests

Test plan

Snapshot test has been added.

[vercel]

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[codecov]

Codecov Report

Merging #351 into master will decrease coverage by 0.35%.
The diff coverage is 0%.

@@            Coverage Diff             @@
##           master     #351      +/-   ##
==========================================
- Coverage   85.06%   84.71%   -0.36%     
==========================================
  Files          30       30              
  Lines         482      484       +2     
  Branches      134      135       +1     
==========================================
  Hits          410      410              
- Misses         60       61       +1     
- Partials       12       13       +1

Impacted Files	Coverage Δ
packages/cli/src/util.js	66.66% <0%> (-10.26%)	⬇️

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