Restructure omni services and add Chatwoot research snapshot

research/chatwoot/enterprise/app/services/page_crawler_service.rb

@@ -0,0 +1,38 @@
+class PageCrawlerService
+  attr_reader :external_link
+
+  def initialize(external_link)
+    @external_link = external_link
+    @doc = Nokogiri::HTML(HTTParty.get(external_link).body)
+  end
+
+  def page_links
+    sitemap? ? extract_links_from_sitemap : extract_links_from_html
+  end
+
+  def page_title
+    title_element = @doc.at_xpath('//title')
+    title_element&.text&.strip
+  end
+
+  def body_text_content
+    ReverseMarkdown.convert @doc.at_xpath('//body'), unknown_tags: :bypass, github_flavored: true
+  end
+
+  private
+
+  def sitemap?
+    @external_link.end_with?('.xml')
+  end
+
+  def extract_links_from_sitemap
+    @doc.xpath('//loc').to_set(&:text)
+  end
+
+  def extract_links_from_html
+    @doc.xpath('//a/@href').to_set do |link|
+      absolute_url = URI.join(@external_link, link.value).to_s
+      absolute_url
+    end
+  end
+end