LanguageClient: Add generic way to provide specialized settings

Change-Id: Iab482220ec7fd73ecd4cbf3d8b1b121e93148059
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

src/plugins/languageclient/languageclientplugin.cpp

@@ -51,6 +51,9 @@ LanguageClientPlugin *LanguageClientPlugin::instance()
 bool LanguageClientPlugin::initialize(const QStringList & /*arguments*/, QString * /*errorString*/)
 {
     LanguageClientManager::init();
+    LanguageClientSettings::registerClientType({Constants::LANGUAGECLIENT_STDIO_SETTINGS_ID,
+                                                tr("Generic StdIO Language Server"),
+                                                []() { return new StdIOSettings; }});
     return true;
 }