fix: import optirrigCORE in loadConfig function for improved functionality

refs #12

R/loadConfig.R

 #' @inherit optirrigCORE::loadConfig
 #'
+#' @import optirrigCORE 
 #' @export
 loadConfig <- function(...,
                        pkg = utils::packageName(),
                        pathDefaultCfg = system.file("config.user.ini", package = pkg)) {
-
+  
   return(optirrigCORE::loadConfig(...,
                                   pkg = pkg,
                                   class = optirrigCORE:::extractClass(pkg),