web_backend: Add initial interface to POST data to Citra Web Services.

src/web_service/web_backend.h

@@ -4,6 +4,28 @@
 
 #pragma once
 
+#include <string>
+#include "common/common_types.h"
+
 namespace WebService {
 
+/**
+ * Gets the current username for accessing services.citra-emu.org.
+ * @returns Username as a string, empty if not set.
+ */
+const std::string& GetUsername();
+
+/**
+ * Gets the current token for accessing services.citra-emu.org.
+ * @returns Token as a string, empty if not set.
+ */
+const std::string& GetToken();
+
+/**
+ * Posts JSON to services.citra-emu.org.
+ * @param url URL of the services.citra-emu.org endpoint to post data to.
+ * @param data String of JSON data to use for the body of the POST request.
+ */
+void PostJson(const std::string& url, const std::string& data);
+
 } // namespace WebService