[wpilib] Add new counter implementations (#2447)

wpilibc/src/main/native/include/frc/counter/EdgeConfiguration.h

@@ -0,0 +1,14 @@
+// Copyright (c) FIRST and other WPILib contributors.
+// Open Source Software; you can modify and/or share it under the terms of
+// the WPILib BSD license file in the root directory of this project.
+
+#pragma once
+
+namespace frc {
+enum class EdgeConfiguration {
+  kNone = 0,
+  kRisingEdge = 0x1,
+  kFallingEdge = 0x2,
+  kBoth = 0x3
+};
+}  // namespace frc