SW-33. Add GUI toggle to eventBus page for export mesh debug packets

eventBusMonitor.py   -- Added variable and public method for export state.
OpenGuiLib.py        -- Added OpenCheckbox for toggle UI.
OpenFrameEventBus.py -- Added checkbox to page and link to eventBusMonitor.
Merge pull request #11 from kb2ma/develop_SW-33

SW-33. Add GUI toggle to eventBus page for export mesh debug packets