Added documentation for skill memory gui

source/RobotAPI/libraries/skills_gui/SkillMemoryGui.h

@@ -20,6 +20,11 @@
 
 namespace armarx::skills::gui
 {
+    /**
+     * @brief The SkillMemoryGUI class represents the entire GUI. To use it, one must first create some widgets,
+     * and construct this GUI with pointers to them. Afterwards, this class will replace/manage the
+     * given widgets itself. Aside from connectivity, no further management is required.
+     */
     class SkillMemoryGUI : public QObject, public armarx::Logging
     {
         Q_OBJECT