feat(sbb-autocomplete): favourites PoC

[TomMenga]

Changes

Implemented a POC for the autocomplete with favourites component

Known a11y problems

The ARIA pattern we are using is not broadly used and presents some problems:

• VoiceOver + Chrome => Reads the content of the option only if the previous one has finished speaking (it is needed to navigate slowly)
• VoiceOver on Safari and iOS is not supported
• VoiceOver + Chrome => Groups labels are not read
• JAWS + Firefox => Groups labels are not read
• Android + TalkBack => Groups labels are not read

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

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Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1772   +/-   ##
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  Coverage        ?   53.41%           
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  Files           ?      161           
  Lines           ?     6375           
  Branches        ?     1749           
=======================================
  Hits            ?     3405           
  Misses          ?     2739           
  Partials        ?      231           

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[jeripeierSBB]

Continued in #2512