[🚩gh-pages]: UIPlayground integration

[ala-n]

Integrate the upcoming @exadel/ui-playground library into ESL GHPages demo site.

NOTE: iteration can be splitter if needed

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• ✅ I Iteration: Initial
  • create a loading bundle for ui-playground
  • create a loading mechanism for ui-playground
  • migrate the "Components: ESLMedia" page to ui-playground
  • retire custom media demo components

Note: iteration I can be released as MVP

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• II Iteration: Example's migration

  • POC: migrate "Examples Accordion"

  • POC: migrate "Examples Animate"

  • POC: migrate "Examples: Scrollbar"

  • POC: migrate "Examples: Footnotes"

  • TBD: discuss results

  • Migration of all Examples pages

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Notes:

• check SEO