RunBeforeExport/RunAfterExport: calling a procedure from an Access add-in

[josef-poetzl]

Allow to start a procedure from an Access add-in with export option Run Sub Before Export.
Example to start automated tests: %appdata%\Microsoft\AddIns\AccUnitLoader.AutomatedTestRun

Possible implementation:
josef-poetzl@7921149

[josef-poetzl]

Note:

Since Application.Run does not forward the error description, I now use this interface:

• Public Function ProcedureNameInAddIn() as String
  => if len(return values) > 0 => show text
  optional with eErrorLevel code like "Error: Error description" or "Warning: warning message to show"
• Public Function ProcedureNameInAddIn() as Boolean
  => if false then Error (eelCritical)

Details:
josef-poetzl@fc902e4

See modification in action:
https://www.youtube.com/watch?v=pGJr5YjuVn4