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

Foundations have been laid.

src/DebugToolDrivers/WCH/Protocols/WchLink/WchLinkInterface.cpp

@@ -0,0 +1,41 @@
+#include "WchLinkInterface.hpp"
+
+#include <memory>
+
+#include "src/Helpers/BiMap.hpp"
+
+#include "Commands/Control/GetDeviceInfo.hpp"
+
+#include "src/TargetController/Exceptions/DeviceCommunicationFailure.hpp"
+
+namespace DebugToolDrivers::Wch::Protocols::WchLink
+{
+    using namespace Exceptions;
+
+    WchLinkInterface::WchLinkInterface(Usb::UsbInterface& usbInterface)
+        : usbInterface(usbInterface)
+    {}
+
+    DeviceInfo WchLinkInterface::getDeviceInfo() {
+        const auto response = this->sendCommandAndWaitForResponse(
+            Commands::Control::GetDeviceInfo()
+        );
+
+        if (response.payload.size() < 3) {
+            throw Exceptions::DeviceCommunicationFailure("Cannot construct DeviceInfo response - invalid payload");
+        }
+
+        static const auto variantsById = BiMap<std::uint8_t, WchLinkVariant>({
+            {0x01, WchLinkVariant::LINK_CH549},
+            {0x02, WchLinkVariant::LINK_E_CH32V307},
+            {0x03, WchLinkVariant::LINK_S_CH32V203},
+        });
+
+        return DeviceInfo(
+            WchFirmwareVersion(response.payload[0], response.payload[1]),
+            response.payload.size() >= 4
+                ? std::optional(variantsById.valueAt(response.payload[2]).value_or(WchLinkVariant::UNKNOWN))
+                : std::nullopt
+        );
+    }
+}