Began implementation of WCH-Link protocol, for the WCH-LinkE debug tool.

Foundations have been laid.

src/DebugToolDrivers/WCH/WchGeneric.hpp

@@ -0,0 +1,14 @@
+#pragma once
+
+#include <cstdint>
+
+namespace DebugToolDrivers::Wch
+{
+    enum class WchLinkVariant: std::uint8_t
+    {
+        LINK_CH549,
+        LINK_E_CH32V307,
+        LINK_S_CH32V203,
+        UNKNOWN,
+    };
+}