Replace multiline CFE_ES_SYSLOG_APPEND macro with inline function

[skliper]

Is your feature request related to a problem? Please describe.
Use of multiline macros should be avoided (per coding standard):

cFE/modules/es/fsw/src/cfe_es_log.h

Lines 100 to 106 in e80aae9

	#define CFE_ES_SYSLOG_APPEND(LogString) \
	{ \
	CFE_ES_LockSharedData(__func__, __LINE__); \
	CFE_ES_SysLogAppend_Unsync(LogString); \
	CFE_ES_UnlockSharedData(__func__, __LINE__); \
	OS_printf("%s", LogString); \
	}

Describe the solution you'd like
Replaced with inline, or one line macro/inline combo

Describe alternatives you've considered
Wrap with do {...} while(0), see https://gcc.gnu.org/onlinedocs/cpp/Swallowing-the-Semicolon.html

Additional context
Code review

Requester Info
Jacob Hageman - NASA/GSFC

[jphickey]

Reviewing how CFE_ES_SYSLOG_APPEND is currently used, I'm having a hard time justifying why it even needs to exist at all anymore. I think previously it was used in more places, perhaps, but now its down to just 4 instances in CDS code, and I can't see any reason why those 4 places can't just use CFE_ES_WriteToSysLog like everything else does.

It's an internal macro in cfe_es_log.h - not public - so my recommendation is to just remove it entirely.