chore(Cross): [IOAPPX-265] Add a new debug screen with the sticky behaviour of the action block

[dmnplb]

Short description

This PR adds a new debug screen with the sticky behaviour of the action block. This screen is intended as a playground to test the feasibility of the functionality in light of the new message detail screen layout.

Known issues:

• The action block flashes for a few milliseconds at the beginning of the ScrollView when the screen is loaded

List of changes proposed in this pull request

• Add the new debug screen to the DS navigator
• Add the new DSStickyMessageCTAs screen component

Preview

sticky-behaviour-message-ctas.mp4

How to test

1. Go to the Design System section
2. Scroll the page, gently or not
3. Try to add different types of buttons (only ButtonSolid, ButtonSolid + ButtonLink, etc…)

[pagopa-github-bot]

Affected stories

• ⚙️ IOAPPX-265: Comportamento sticky del blocco CTA nel dettaglio dei messaggi
  subtask of
  • ⚡ IOAPPX-32: Design System

Generated by 🚫 dangerJS against bf1ad9b

[codecov]

Codecov Report

Attention: Patch coverage is 12.00000% with 22 lines in your changes are missing coverage. Please review.

Project coverage is 49.52%. Comparing base (4f204b4) to head (bf1ad9b).
Report is 75 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5623      +/-   ##
==========================================
+ Coverage   48.42%   49.52%   +1.09%     
==========================================
  Files        1488     1603     +115     
  Lines       31617    31886     +269     
  Branches     7669     7651      -18     
==========================================
+ Hits        15311    15792     +481     
+ Misses      16238    16040     -198     
+ Partials       68       54      -14     

Files	Coverage Δ
ts/features/design-system/navigation/navigator.tsx	22.85% <ø> (ø)
ts/features/design-system/navigation/routes.ts	100.00% <ø> (ø)
...eatures/design-system/core/DSStickyMessageCTAs.tsx	12.00% <12.00%> (ø)

... and 420 files with indirect coverage changes

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[CrisTofani]

LGTM