Add 1st level symlink follow on walkdirs

[slok]

Closes #218

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 7 lines in your changes missing coverage. Please review.

Project coverage is 49.11%. Comparing base (4307691) to head (f631626).

Files with missing lines	Patch %	Lines
internal/storage/fs/secret.go	0.00%	7 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #219      +/-   ##
==========================================
- Coverage   49.25%   49.11%   -0.14%     
==========================================
  Files          37       37              
  Lines        2467     2474       +7     
==========================================
  Hits         1215     1215              
- Misses       1077     1084       +7     
  Partials      175      175              

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