Improve ConfigurationException message thrown from EsapiPropertyLoaderFactory.createPropertyLoader()

[kwwall]

If the passed in configuration file name has neither a suffix of ".properties" or ".xml", then this is thrown:

throw new ConfigurationException("Configuration storage type [" + fileExtension + "] is not " +
                    "supported");

This exception message does not clearly convey what is expected for the ESAPI client to do to make it work.

Describe the solution you'd like
Replace the current code, shown above, with something similar to this:

throw new ConfigurationException("Configuration path of [" + cfgPath + "] has unsupported file suffix." +
                    "Only .properties or .xml file suffix is supported.");

[pintohen]

I'll take a peek on this. I'll think of an appealing and intuitive message in order for everyone to understand what type of files shoud be supported.

[kwwall]

@HenriquePinto333 - Thanks. That would be great. If this is your first time contributing to ESAPI, be sure to read https://github.com/ESAPI/esapi-java-legacy#contributing-to-esapi-legacy.

Also, for a bit of context, you may want to read through the posts at https://groups.google.com/a/owasp.org/g/esapi-project-users/c/k9335ATXcoE on the ESAPI Project Users mailing list. (You should be able to read it even if you are not subscribed to the list.)