feat: created Initial Screen pattern

[joacotornello]

Type

• New feature 🌈

Changes proposed ✔️

Created InitialScreen pattern with its respective components: Section, Card, Bullet, Hero, Module and Feature.

JIRA: https://tiendanube.atlassian.net/browse/NIMBUS-16

[github-actions]

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.64%. Comparing base (3637d3e) to head (17b42cf).
Report is 2 commits behind head on master.

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Additional details and impacted files

@@            Coverage Diff             @@
##           master      #97      +/-   ##
==========================================
- Coverage   90.24%   89.64%   -0.60%     
==========================================
  Files         106      135      +29     
  Lines         707      908     +201     
  Branches      117      145      +28     
==========================================
+ Hits          638      814     +176     
- Misses         64       89      +25     
  Partials        5        5              

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