Transforms the output of the ResIN function into an [igraph](https://igraph.org/r/doc/cluster_leading_eigen.html) object
References
Csardi G, Nepusz T (2006). “The igraph software package for complex network research.” InterJournal, Complex Systems, 1695. https://igraph.org.
Examples
## Load the 12-item simulated Likert-type ResIN toy dataset
data(lik_data)
## Run the function:
# \donttest{
igraph_output <- ResIN_to_igraph(ResIN(lik_data))
## Plot and/or investigate as you wish:
igraph::plot.igraph(igraph_output)
# }