Init camel debug.
CAMEL_DEBUG is set to a comma separated list of modules to debug. The modules can contain module-specific specifiers after a ':', or just
act as a wildcard for the module or even specifier. e.g. 'imap' for imap debug, or 'imap:folder' for imap folder debug. Additionaly, '
:folder' can be used for a wildcard for any folder operations.