Added AddListElement and RemoveListElement services (#418)

* Added AddListElement and RemoveListElement services

Added list-element codec and unit tests.
Added BACnetDestination codec and unit tests.
Added RecipientList handling to NotificationClass object.
Added AddListElement and RemoveListElement client example app.

* Fix defects found by scan-build and CPPCHECK

* Update ports errors found during CI builds

* Update zephy os test build missing files in CMakeLists

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Co-authored-by: Ondřej Hruška <ondra@ondrovo.com>
Co-authored-by: Steve Karg <skarg@users.sourceforge.net>

.gitignore

@@ -109,3 +109,6 @@ apps/piface/libpifacedigital/
 /apps/writepropm/bacwpm
 /apps/mstpcap/mstpcap
 /apps/mstpcrc/mstpcrc
+/apps/add-list-element/bacale
+/apps/remove-list-element/bacrle
+