Let escape presses work properly inside HDrawer

Also add escape to clear member filter when focusing the field, and
clearMemberFilterOnEscape setting.

src/gui/DebugConsole.qml

@@ -207,9 +207,12 @@ HDrawer {
 
             Keys.onUpPressed:
                 if (historyEntry + 1 < history.length ) historyEntry += 1
+
             Keys.onDownPressed:
                 if (historyEntry - 1 >= -1) historyEntry -= 1
 
+            Keys.onEscapePressed: debugConsole.close()
+
             Layout.fillWidth: true
 
         }