feat: Slack link unfurling (#7940)

Co-authored-by: Pranav Raj S <pranav@chatwoot.com>

config/initializers/monkey_patches/chat.rb

@@ -0,0 +1,21 @@
+module Slack
+  module Web
+    module Api
+      module Endpoints
+        module Chat
+          # TODO: Remove this monkey patch when PR for this issue https://github.com/slack-ruby/slack-ruby-client/issues/388 is merged
+          def chat_unfurl(options = {})
+            if (options[:channel].nil? || options[:ts].nil?) && (options[:unfurl_id].nil? || options[:source].nil?)
+              raise ArgumentError, 'Either a combination of :channel and :ts or :unfurl_id and :source is required'
+            end
+
+            raise ArgumentError, 'Required arguments :unfurls missing' if options[:unfurls].nil?
+
+            options = options.merge(channel: conversations_id(options)['channel']['id']) if options[:channel]
+            post('chat.unfurl', options)
+          end
+        end
+      end
+    end
+  end
+end