Add models and migrations

lib/nulla_web/controllers/note_html.ex

@@ -0,0 +1,13 @@
+defmodule NullaWeb.NoteHTML do
+  use NullaWeb, :html
+
+  embed_templates "note_html/*"
+
+  @doc """
+  Renders a note form.
+  """
+  attr :changeset, Ecto.Changeset, required: true
+  attr :action, :string, required: true
+
+  def note_form(assigns)
+end