web_service: Move web_result.h into web_service

This is the only place it's actively used. It's also more appropriate
for web-related structures to be within the web service target.
Especially given this one doesn't rely on anything in the common
library.

src/web_service/web_result.h

@@ -0,0 +1,25 @@
+// Copyright 2018 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <string>
+#include "common/common_types.h"
+
+namespace WebService {
+struct WebResult {
+    enum class Code : u32 {
+        Success,
+        InvalidURL,
+        CredentialsMissing,
+        LibError,
+        HttpError,
+        WrongContent,
+        NoWebservice,
+    };
+    Code result_code;
+    std::string result_string;
+    std::string returned_data;
+};
+} // namespace WebService