Issues/issue 593 update to zephyr v3 6 0 (#601)

* [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/

---------

Co-authored-by: Gregory Shue <gregory.shue@legrand.com>

test/unit/bacnet/bacerror/src/main.c

@@ -149,7 +149,11 @@ static int decode_enumerated_custom_fake(
  * Tests:
  */
 
+#ifdef CONFIG_ZTEST_NEW_API
+ZTEST(bacnet_bacint, test_bacerror_encode_apdu)
+#else
 static void test_bacerror_encode_apdu(void)
+#endif
 {
     uint8_t test_apdu[32] = { 0 };
 
@@ -358,7 +362,11 @@ static void test_bacerror_encode_apdu(void)
     }
 }
 
+#ifdef CONFIG_ZTEST_NEW_API
+ZTEST(bacnet_bacerror, test_bacerror_decode_error_class_and_code)
+#else
 static void test_bacerror_decode_error_class_and_code(void)
+#endif
 {
 #if !BACNET_SVC_SERVER
     uint8_t test_apdu[32] = { 0 };
@@ -1118,6 +1126,9 @@ static void test_bacerror_decode_error_class_and_code(void)
 #endif
 }
 
+#ifdef CONFIG_ZTEST_NEW_API
+ZTEST_SUITE(bacnet_error, NULL, NULL, NULL, NULL, NULL);
+#else
 void test_main(void)
 {
     ztest_test_suite(bacnet_bacerror,
@@ -1125,3 +1136,4 @@ void test_main(void)
         ztest_unit_test(test_bacerror_decode_error_class_and_code));
     ztest_run_test_suite(bacnet_bacerror);
 }
+#endif