feat(home): add recommendations shelf

[AntonLantukh]

Description

• new recommendations shelf based on the watched video
• new playlist type 'recommendations'
• docs updated
• e2e tests

This PR solves #32.

Steps completed:

According to our definition of done, I have completed the following steps:

• [ ] User stories met
• [ ] Storybook stories
• [ ] Unit tests added
• [ ] Linting passing
• [ ] Unit tests passing
• [ ] Docs updated (including config and env variables)
• [ ] Translations added
• [ ] UX tested
• [ ] Browsers / platforms tested
• [ ] Rebased & ready to merge without conflicts
• [ ] Reviewed own code

[github-actions[bot]]

Visit the preview URL for this PR (updated for commit a31922d):

https://ottwebapp--pr123-feature-because-you-jdr6z9wl.web.app

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