Add day template

template.livemd

@@ -0,0 +1,69 @@
+# AOC 2022 - Template
+
+```elixir
+Mix.install([
+  {:req, "~> 0.3.3"}
+])
+```
+
+## Puzzle description
+
+[Day 1: Calorie Counting](https://adventofcode.com/2022/day/1).
+
+## Input
+
+```elixir
+defmodule Load do
+  def input do
+    aoc_session = System.fetch_env!("LB_AOC_SESSION")
+    input_url = "https://adventofcode.com/2022/day/1/input"
+    Req.get!(input_url, headers: [cookie: "session=#{aoc_session}"]).body
+  end
+end
+```
+
+## Solution
+
+```elixir
+defmodule Part1 do
+  def run(input) do
+    0
+  end
+end
+
+defmodule Part2 do
+  def run(input) do
+    0
+  end
+end
+
+ExUnit.start(autorun: false)
+
+defmodule Test do
+  use ExUnit.Case, async: true
+  @example_input ~s()
+  @input Load.input()
+
+  test "it loads the input" do
+    assert String.length(@input) > 0
+  end
+
+  test "part 1 example" do
+    assert Part1.run(@example_input) === 0
+  end
+
+  test "part 1" do
+    assert Part1.run(@input) === 0
+  end
+
+  test "part 2 example" do
+    assert Part2.run(@example_input) === 0
+  end
+
+  test "part 2" do
+    assert Part2.run(@input) === 0
+  end
+end
+
+ExUnit.run()
+```