Output all the working options and their value

At the debug verbose level (-verbose 3) only.

params.cpp

@@ -247,9 +247,34 @@ bool Params::parseParams(const QStringList &paramsArray) {
         }
     }
 
+    printWorkingOptions();
+
     return true;
 }
 
+void Params::printWorkingOptions() {
+    QuasarAppUtils::Params::log("--- Working options table start ---",
+                                QuasarAppUtils::Debug);
+
+    QVariantMap::const_iterator iter = params.constBegin();
+    while (iter != params.constEnd()) {
+
+        QString row = QString{"Option[%0]"}.arg(iter.key());
+
+        QString value = iter.value().toString();
+        if (!value.isEmpty()) {
+            row += QString{": %1"}.arg(value);
+        }
+
+        QuasarAppUtils::Params::log(row, QuasarAppUtils::Debug);
+
+        ++iter;
+    }
+
+    QuasarAppUtils::Params::log("--- Working options table end ---",
+                                QuasarAppUtils::Debug);
+}
+
 QString Params::getStrArg(const QString& key, const QString &def) {
     return params.value(key, def).toString();
 }

params.h

@@ -40,6 +40,13 @@ private:
     static std::string lvlToString(VerboseLvl vLvl);
     static bool writeLoginFile(const QString& log, VerboseLvl vLvl = VerboseLvl::Debug);
 
+    /**
+     * @brief Traverse @a params and output its content (all the working
+     *    options) to stdout in the form of option-value groups at the
+     *    debug verbose level (-verbose 3).
+     */
+    static void printWorkingOptions();
+
 public:
     Params() = delete;