Pre-prepare for alpha launch (#44)

* Add an initial version

* Add a license

mix.exs

@@ -4,7 +4,7 @@ defmodule Pinchflat.MixProject do
   def project do
     [
       app: :pinchflat,
-      version: "0.1.0",
+      version: "0.1.0-alpha",
       elixir: "~> 1.16",
       elixirc_paths: elixirc_paths(Mix.env()),
       start_permanent: Mix.env() == :prod,