configuration: Initial work to reset all settings

This commit does not compile.

Initial work to add and connect a Reset to Defaults button to the
configure_general tab.

Co-authored-by: german77 <juangerman-13@hotmail.com>

src/yuzu/configuration/config.cpp

@@ -1632,6 +1632,12 @@ void Config::Save() {
     SaveValues();
 }
 
+void Config::ResetDefaults() {
+    FS::Delete(qt_config_loc);
+    FS::CreateFullPath(qt_config_loc);
+    Reload();
+}
+
 void Config::ReadControlPlayerValue(std::size_t player_index) {
     qt_config->beginGroup(QStringLiteral("Controls"));
     ReadPlayerValue(player_index);