Add use case keyboard

[cedelavergne-ledger]

Description

Add new NBGL useCase to simplify the use of Keyboard

Changes include

• Bugfix (non-breaking change that solves an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (change that is not backwards-compatible and/or changes current functionality)
• Tests
• Documentation
• Other (for changes that might not fit in any category)

Auto cherry-pick in API_LEVEL

[X] TARGET_API_LEVEL: API_LEVEL_25

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.82%. Comparing base (37a48bd) to head (449573a).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1453   +/-   ##
=======================================
  Coverage   91.82%   91.82%           
=======================================
  Files          37       37           
  Lines        4244     4244           
  Branches      521      521           
=======================================
  Hits         3897     3897           
  Misses        257      257           
  Partials       90       90           

Flag	Coverage Δ
unittests	91.82% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.