Add a 'list' option for the CLI

This commit addresses Issue #448 by adding a command line option that allows the listing of all the Apps reported by the remote host as a CSV.

app/cli/commandlineparser.h

@@ -13,6 +13,7 @@ public:
         StreamRequested,
         QuitRequested,
         PairRequested,
+        ListRequested,
     };
 
     GlobalCommandLineParser();
@@ -72,3 +73,17 @@ private:
     QMap<QString, StreamingPreferences::VideoDecoderSelection> m_VideoDecoderMap;
     QMap<QString, StreamingPreferences::CaptureSysKeysMode> m_CaptureSysKeysModeMap;
 };
+
+class ListCommandLineParser
+{
+public:
+    ListCommandLineParser();
+    virtual ~ListCommandLineParser();
+
+    void parse(const QStringList &args);
+
+    QString getHost() const;
+
+private:
+    QString m_Host;
+};