Feature/bacnet secure connect hub (#818)

* Added BACnet Secure Connect datalink.

* Added BACnet/SC hub application
---------

Co-authored-by: Kirill Neznamov <kirill.neznamov@dsr-corporation.com>
Co-authored-by: Mikhail Antropov <michail.antropov@dsr-corporation.com>
Co-authored-by: Ondřej Hruška <ondra@ondrovo.com>
Co-authored-by: Patrick Grimm <patrick@lunatiki.de>

test/bacnet/bacdevobjpropref/CMakeLists.txt

@@ -62,6 +62,7 @@ add_executable(${PROJECT_NAME}
     ${SRC_DIR}/bacnet/calendar_entry.c
     ${SRC_DIR}/bacnet/special_event.c
     ${SRC_DIR}/bacnet/channel_value.c
+    ${SRC_DIR}/bacnet/secure_connect.c
     # Test and test library files
     ./src/main.c
     ${ZTST_DIR}/ztest_mock.c