Marketplace titles and ads

[maxaleks]

Description and Related Issue(s)

This PR adds advertising to the Marketplace and the ability to change Marketplace titles.

Resolves #3082, #3041, #3085

🚨 ENV vars

New env vars introduced:

• NEXT_PUBLIC_VIEWS_MARKETPLACE_TITLES – to change Marketplace titles
• NEXT_PUBLIC_VIEWS_MARKETPLACE_ESSENTIAL_DAPPS_AD_ENABLED – to optionally disable ads in essential dapps

Example values:

NEXT_PUBLIC_VIEWS_MARKETPLACE_TITLES={ 'entity_name': 'Dapp', 'menu_item': 'Dapps', 'title': 'Dappscout', 'subtitle_essential_dapps': 'Essential dapps', 'subtitle_list': 'Explore dapps' }
NEXT_PUBLIC_VIEWS_MARKETPLACE_ESSENTIAL_DAPPS_AD_ENABLED=false

Checklist for PR author

• I have tested these changes locally.
• I added tests to cover any new functionality, following this guide
• Whenever I fix a bug, I include a regression test to ensure that the bug does not reappear silently.
• If I have added, changed, renamed, or removed an environment variable
  • I updated the list of environment variables in the documentation
  • I made the necessary changes to the validator script according to the guide
  • I added "ENVs" label to this pull request