Add has_needs_citations_tag to version object so data consumers can easily determine if this version of the has facts that need citations.

Notes:

• we need to look for {{citation needed}} template inside the article body (wikitext), note that template can have properties so regex would be something like ^{{citation needed(\||}})
• link to the template
• link to the wikipedia article
• link to the wikipedia article example where {{citation needed}} template is uesed

Schema:

{
  "name":  "Advertising",
  "version": {
    "has_needs_citations_tag": true,
  },
  // ...other stuff goes here...
}