Make currently used settings be printed out at application start

Due to the SettingsController being a static object it will be
initialized before the main method has been run. This will cause
easylogging to log using the default logging style instead of the
defined application style. Because of this the settings are propogated
up through a function into the main method.

src/settings/internal/settings_controller.h

@@ -10,6 +10,38 @@
 
 namespace settings
 {
+template <typename Value> std::string valueToString( Value value )
+{
+    using std::is_same;
+    if constexpr ( is_same<bool, Value>::value )
+    {
+        return value ? "true" : "false";
+    }
+    else if constexpr ( is_same<double, Value>::value
+                        || is_same<int, Value>::value )
+    {
+        return std::to_string( value );
+    }
+    if constexpr ( is_same<std::string, Value>::value )
+    {
+        return value;
+    }
+}
+
+template <int ArraySize, typename Value>
+[[nodiscard]] std::string
+    returnSettingsAndValues( std::array<Value, ArraySize> v )
+{
+    std::string s = "default";
+
+    for ( const auto& setting : v )
+    {
+        s += setting.qtInfo().settingName + ": '"
+             + valueToString( setting.value() ) + "' | ";
+    }
+
+    return s;
+}
 template <typename Enum, int ArraySize, typename Value>
 void verifySettings( std::array<Value, ArraySize> v ) noexcept
 {
@@ -40,8 +72,6 @@ void verifySettings( std::array<Value, ArraySize> v ) noexcept
             exit( ReturnErrorCode::SETTING_INCORRECT_INDEX );
         }
     }
-
-    LOG( DEBUG ) << "Settings for '" << typeid( Enum ).name() << "' verified.";
 }
 
 class SettingsController
@@ -58,6 +88,20 @@ public:
         verifySettings<IntSetting, intSettingsSize>( m_intSettings );
     }
 
+    std::string getSettingsAndValues() const noexcept
+    {
+        std::string s;
+        s += returnSettingsAndValues<boolSettingSize>( m_boolSettings );
+
+        s += returnSettingsAndValues<doubleSettingSize>( m_doubleSettings );
+
+        s += returnSettingsAndValues<stringSettingsSize>( m_stringSettings );
+
+        s += returnSettingsAndValues<intSettingsSize>( m_intSettings );
+
+        return s;
+    }
+
     std::string getSettingsFileName() const noexcept
     {
         return getQSettings().fileName().toStdString();