Add discord RPC

src/discord.h

@@ -0,0 +1,19 @@
+#pragma once
+
+#include <discord_rpc.h>
+#include <cstdint>
+#include <string>
+
+namespace Discord {
+	enum class RPCStatus { Idling, Playing };
+
+	class RPC {
+		std::uint64_t startTimestamp;
+		bool enabled = false;
+
+	  public:
+		void init();
+		void update(RPCStatus status, const std::string& title);
+		void stop();
+	};
+}  // namespace Discord