Feature/create object initial value backup (#1223)

* Added example Device object and property value backup using create-object list-of-initial-values and writable properties. Initiated using ReinitializeDevice with STARTBACKUP command. Added backup and restore required properties to the Device object.

* Fixed fwrite parameters in bacfile_posix_write_stream_data to return the correct number of bytes written.

* Added Device Management-Backup and Restore-B (DM-BR-B) conversion to Wireshark PCAP format command line utility in apps/dmbrcap which decodes and provides a view of the binary backup file.

apps/Makefile

@@ -237,6 +237,7 @@ endif
 BACNET_DEFINES += -DPRINT_ENABLED=1
 BACNET_DEFINES += -DBACAPP_ALL
 BACNET_DEFINES += -DBACNET_TIME_MASTER
+BACNET_DEFINES += -DBACNET_BACKUP_RESTORE
 BACNET_DEFINES += -DBACNET_PROPERTY_LISTS=1
 BACNET_DEFINES += -DBACNET_PROTOCOL_REVISION=28
 
@@ -266,7 +267,7 @@ SUBDIRS = lib readprop writeprop readfile writefile reinit server dcc \
 	whohas whois iam ucov scov timesync epics readpropm readrange \
 	writepropm uptransfer getevent uevent abort error event ack-alarm \
 	server-client add-list-element remove-list-element create-object \
-	who-am-i you-are apdu writegroup \
+	who-am-i you-are apdu writegroup dmbrcap \
 	delete-object server-discover server-basic server-mini
 
 ifneq (,$(filter $(BACDL),bip all))
@@ -401,6 +402,10 @@ whatisnetnum: $(BACNET_LIB_TARGET)
 netnumis: $(BACNET_LIB_TARGET)
 	$(MAKE) -B -C $@
 
+.PHONY: dmbrcap
+dmbrcap:
+	$(MAKE) -B -C $@
+
 .PHONY: mstpcap
 mstpcap:
 	$(MAKE) -B -C $@