feat(Carta Giovani Nazionale): [#176442968] Adds CGN Feature Flag

[CrisTofani]

Short description

The purpose of this PR is to add the beginning configuration of CGN feature flag and pivotal stories track to changelog.ts

[pagopa-github-bot]

Affected stories

• 🌟 #176442968: Come DEV voglio avere un feature flag che attivi o nasconda le funzionalità per CGN in APP

Generated by 🚫 dangerJS against bde314d

[codecov]

Codecov Report

Merging #2714 (bde314d) into master (519fe9c) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff            @@
##           master    #2714    +/-   ##
========================================
  Coverage   51.96%   51.97%            
========================================
  Files         756      756            
  Lines       21311    21312     +1     
  Branches     4048     3716   -332     
========================================
+ Hits        11075    11076     +1     
  Misses      10192    10192            
  Partials       44       44            

Impacted Files	Coverage Δ
scripts/changelog/ts/changelog.ts	72.72% <ø> (ø)
ts/config.ts	100.00% <100.00%> (ø)

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