* Added dependent BACnet stack headers into bacdef.h file.
* Changed bacdef.h and other stack includes in c/h files to have a common pattern.
* Moved bits.h, bytes.h, and bacnet_stack_exports.h under bacnet/basic/sys/ folder.
* [WIP] update manifest to zephyr v3.6.0
* [WIP] Deprecated ZTEST_NEW_API adjustments
Zephyr v3.6.0 removed Kconfig ZTEST_NEW_API.
The old ZTEST API is still used by non-Zephyr builds,
so the config setting is moved from `prj.conf` to
the test's CMakeLists.txt as `add_compile_definitions()`.
Verified by:
1. make clean all test
2. ./zephyr/scripts/twister -p unit_testing \
-T bacnet-stack/zephyr/tests/
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Co-authored-by: Gregory Shue <gregory.shue@legrand.com>
Steve Karg