Add rust to solve parameter

Author: code-shoily

lib/advent_of_code.ex

@@ -16,8 +16,16 @@ defmodule AdventOfCode do
   Solves for `year` and `day`.
   """
   @spec solve(year(), day()) :: {any(), any()}
-  def solve(year, day) do
-    {:ok, Module.concat([AdventOfCode, get_year_module(year), get_day_module(day)]).run()}
+  def solve(year, day, rust? \\ false) do
+    solution = :timer.tc(fn ->
+      case rust? do
+        true ->
+            {_, result} = AdventOfCode.RustNif.solve(year, day)
+            result
+        false -> Module.concat([AdventOfCode, get_year_module(year), get_day_module(day)]).run()
+      end
+    end)
+    {:ok, solution}
   rescue
     _ in FunctionClauseError -> {:error, :invalid_args}
     _ in UndefinedFunctionError -> {:error, :not_yet_solved}