day 8 puzzle 2 (naive and not optimized)

tests/day8/Puzzle2Test.scala

@@ -0,0 +1,9 @@
+package day8
+
+import org.scalatest.funsuite.AnyFunSuite
+
+class Puzzle2Test extends AnyFunSuite {
+  test("Puzzle2.solve") {
+    assert(Puzzle2.solve("tests_res/day8/input1.txt") == 6)
+  }
+}