Refactor micropub specific things out to a slice

slices/micropub/commands/posts/send_webmentions.rb

@@ -0,0 +1,18 @@
+require "httparty"
+require "que"
+
+module Micropub
+  module Commands
+    module Posts
+      class SendWebmentions
+        include Deps["settings", "post_utilities.link_finder"]
+
+        def call(post_content:, post_url:)
+          Que.connection = Adamantium::Container["persistence.db"]
+
+          Adamantium::Jobs::SendWebMentions.enqueue(post_content: post_content, post_url: post_url)
+        end
+      end
+    end
+  end
+end