Add verify-package, rename verify to verify-timestamp

[Xarthisius]

Fixes #8 and #7

[codecov]

Codecov Report

❌ Patch coverage is 89.43089% with 13 lines in your changes missing coverage. Please review.
✅ Project coverage is 91.36%. Comparing base (4f293b5) to head (c427ab6).
⚠️ Report is 7 commits behind head on main.

Files with missing lines	Patch %	Lines
tro_utils/cli.py	85.18%	8 Missing ⚠️
tro_utils/tro_utils.py	92.75%	5 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main      #14       +/-   ##
===========================================
+ Coverage   59.21%   91.36%   +32.14%     
===========================================
  Files           3        3               
  Lines         358      463      +105     
===========================================
+ Hits          212      423      +211     
+ Misses        146       40      -106     

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