✨ Add package name validation function

[perdasilva]

Description

Adds a bundle validation check against the package name to ensure it is defined in the RegistryV1 bundle structure. And does some tidying adding array pre-allocations

Reviewer Checklist

• API Go Documentation
• Tests: Unit Tests (and E2E Tests, if appropriate)
• Comprehensive Commit Messages
• Links to related GitHub Issue(s)

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 69.22%. Comparing base (115a122) to head (b103288).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1901      +/-   ##
==========================================
+ Coverage   69.21%   69.22%   +0.01%     
==========================================
  Files          67       67              
  Lines        5302     5307       +5     
==========================================
+ Hits         3670     3674       +4     
- Misses       1399     1400       +1     
  Partials      233      233              

Flag	Coverage Δ
e2e	50.55% <62.50%> (+0.06%)	⬆️
unit	57.00% <100.00%> (-0.04%)	⬇️

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