Add temporary parse function to Statifier api

We can use this function to test out our parsing of schemas and
transitions of the machines. This is not a long term function to have in
the api.

impl/ex/lib/statifier.ex

@@ -0,0 +1,22 @@
+defmodule Statifier do
+  def parse() do
+    :statifier
+    |> :code.priv_dir()
+    |> Path.join("scxml/microwave.scxml")
+    |> Statifier.Codec.SCXML.parse()
+  end
+
+  def parse(file) do
+    codec =
+      if String.ends_with?(file, ".yaml") do
+        Statifier.Codec.YAML
+      else
+        Statifier.Codec.SCXML
+      end
+
+    :statifier
+    |> :code.priv_dir()
+    |> Path.join(file)
+    |> codec.parse()
+  end
+end