[JSON] - dirty code for building intrusive and non-intrusive...

[JSON] 	- dirty code for building intrusive and non-intrusive serialisation/deserialisation macros for custom types
		- updated .gitignore file to ignore private netbeans project configurations

.gitignore

@@ -34,3 +34,4 @@ doc/mkdocs/site
 doc/mkdocs/docs/__pycache__/
 /tools/NlohmannMacroBuilder/dist/
 /tools/NlohmannMacroBuilder/build/
+/tools/NlohmannMacroBuilder/nbproject/private
\ No newline at end of file