Chore/bacnet-sc-unrelated-cleanup (#620)

* Added required linux Ethernet library for ethernet build

* Added .obj to gitignore

* Fixed BACnet port for APPLE to use BSD in CMake

* Changed format in CMake to enable cleaner SC merge

* Added create-object and delete-object recipes in GCC Makefile

* Added datalink timer to all example OS apps

* Changed most microcontroller ports to use BACAPP_MINIMAL to specify which datatypes can be written.

* Fixed zephyr OS for BACnet/IP warning

* Fixed zephyr OS log to not require log_strdup

* Added writefile API to file object example

* Added API to device-client to make it more robust.

* Added API in network-port object for getting the ASCII object-name

* Added debug print with a timestamp option

* Added debug print with hex dump print

* Added API to network port object for activate and discard

* Added default define for debug with timestamp

* Added prototype in header for disabled debug printf.

* Added fifo peek ahead function to peek at more than one byte.

* Added get-mac value for network port that uses buffer rather than octetstring

CMakeLists.txt

@@ -597,6 +597,7 @@ elseif(WIN32)
 elseif(APPLE)
   message(STATUS "BACNET: building for APPLE")
   set(BACNET_PORT_DIRECTORY_PATH ${CMAKE_CURRENT_LIST_DIR}/ports/bsd)
+  add_compile_definitions(BACNET_PORT=bsd)
 
   target_sources(${PROJECT_NAME} PRIVATE
     ports/bsd/bacport.h
@@ -617,7 +618,8 @@ elseif(${CMAKE_SYSTEM_NAME} STREQUAL "FreeBSD")
 endif()
 
 target_include_directories(${PROJECT_NAME} PUBLIC
-  $<BUILD_INTERFACE:${BACNET_PORT_DIRECTORY_PATH}>)
+  $<BUILD_INTERFACE:${BACNET_PORT_DIRECTORY_PATH}>
+)
 
 #
 # examples