feat: verifies namespace hash format to prevent panic in validateSiblingsNamespaceOrder

[staheri14]

Overview

Closes #138

Checklist

• [x] New and updated code has appropriate documentation
• [x] New and updated code has new and/or updated testing
• [x] Required CI checks are passing
• [x] Visual proof for any user facing features like CLI or documentation updates
• [x] Linked issues closed with keywords

[codecov[bot]]

Codecov Report

Merging #185 (fb8ee89) into master (f403fd9) will increase coverage by 0.02%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #185      +/-   ##
==========================================
+ Coverage   95.66%   95.69%   +0.02%     
==========================================
  Files           5        5              
  Lines         554      557       +3     
==========================================
+ Hits          530      533       +3     
  Misses         14       14              
  Partials       10       10              

Impacted Files	Coverage Δ
hasher.go	97.60% <100.00%> (+0.05%)	:arrow_up: