Update texts when user clicks Compute All

[thomasa88]

Is your feature request related to a problem? Please describe. If the add-in does not update the texts automatically, the user expects it to update them when clicking Compute All

Describe the solution you'd like Re-evaluate all texts if the user clicks Compute All. Make sure that a compute all triggered by the add-in does not trigger the re-evaluation, to avoid infinite recursion.

Describe alternatives you've considered Add-ins can call a custom command:

    app.fireCustomEvent('thomasa88_ParametricText_Ext_Update')
    adsk.doEvents()
    adsk.doEvents()