OSCBS-23 Scalable BACnet object arrays, part #2

Add processing object table as section iterable for zephyr
      - zephyr/subset/object/device.c
      - zephyr/subset/object/objects.ld
    Add object descriptor array as dynamic list
      - zephyr/subset/object/object.h
      - zephyr/subset/object/*.c

zephyr/subsys/CMakeLists.txt

@@ -2,3 +2,4 @@
 # SPDX-License-Identifier: MIT
 
 add_subdirectory_ifdef(CONFIG_BACNETSTACK_BACNET_SERVER server)
+add_subdirectory(object)