SWDEV-410524 - Doxygen add WARN_AS_ERROR

Change-Id: I714712d61d1526cb75122a2f23e293745d41a701
Signed-off-by: Galantsev, Dmitrii <dmitrii.galantsev@amd.com>

docs/.doxygen/Doxyfile

@@ -17,6 +17,9 @@
 # Project related configuration options
 #---------------------------------------------------------------------------
 
+# Fail if warnings are found
+WARN_AS_ERROR          = YES
+
 # This tag specifies the encoding used for all characters in the config file
 # that follow. The default is UTF-8 which is also the encoding used for all text
 # before the first occurrence of this tag. Doxygen uses libiconv (or the iconv