chore: add more cpp standards to check with

Author: garbbraf

com.googlecode.cppcheclipse.ui/src/com/googlecode/cppcheclipse/ui/preferences/SettingsPreferencePage.java

@@ -161,7 +161,8 @@ public void setEnabled(boolean enabled, Composite parent) {
 				IPreferenceConstants.P_LANGUAGE_STANDARD_CPP,
 				"C++ Language Standard", new String[][] {
 						{ "Unspecified", "" }, { "C++03", "c++03" },
-						{ "C++11", "c++11" }}, getFieldEditorParent());
+						{ "C++11", "c++11" }, { "C++14", "c++14" },
+						{ "C++17", "c++17" }, { "C++20", "c++20" }}, getFieldEditorParent());
 		addField(languageStandardCppEditor);
 
 		final ComboFieldEditor platformsEditor = new ComboFieldEditor(