Preparation for support of LSI AF Message Maker, Examples adapted to the latter

- Removed unused Async Message property write methods
- Added a "Async Message Settings" to be used by the LS AF Message Maker to create send methods for the concrete Async Messages
- Removed dependencies on OpenG Error and Variant libraries. This allows exporting code to previous versions of LabVIEW
- The Example now leverages on the Async messages created by the LSI AF Message Maker v2.0
- In order to be able to create Async messages by means of the LSI AF Message Maker v2.0, a master copy of the Example was created that links to the Async Methods Actors VIPM package. Herein we create Async messages by the LSI AF Message Maker v2.0, since the latter links to the Async Methods Actors VIPM. Once this is done the Example is copied to the git version folder the VIPM is uninstalled and the Example is relinked to the git source

Author: AndreaV-Lsi