Add builder pattern for paragraph, lists, tables

lib/ezdoc/nodes/list_item.rb

@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+module Ezdoc
+  module Nodes
+    class ListItem < Base
+      attr_reader :runs, :list_type, :num_id
+
+      def initialize(runs = [], list_type:, num_id:)
+        super()
+        @runs = runs
+        @list_type = list_type
+        @num_id = num_id
+      end
+
+      def add_run(run)
+        @runs << run
+      end
+    end
+  end
+end