Improve performance of .lvCompare()

[Qile0317]

A general improvement on the runtime of combineBCR() by accelerating .lvCompare() with rcpp by a small constant factor.

[Qile0317]

@ncborcherding Just realized that the vignette build failed in the R-CMD-check with the following:

Error: Error: processing vignette 'vignette.Rmd' failed with diagnostics:
object 'uni_IG' not found
--- failed re-building ‘vignette.Rmd’

and also

The magick package is required to crop "/tmp/Rtmp7YAETR/Rbuild179452a8e5c7/scRepertoire/vignettes/vignette_files/figure-html/unnamed-chunk-55-1.png" but not available.
Quitting from lines 1146-1159 [unnamed-chunk-57] (vignette.Rmd)

Will get on that later. Unsure why vignette is failing since it wasn't really touched.

[ncborcherding]

Looks like the clonalCluster() is broken or at least the internal .lvCompare() based on the error message.

I think the magick warning is a BiocStyle issue.

[Qile0317]

@ncborcherding Could you maybe describe what exactly this intermediate variable is supposed to be? Struggling to debug downstream atm.

[ncborcherding]

@Qile0317 Here the cluster.list is the cluster assignments from the .lv.compare() function that are grouped into list elements, bind_rows() is just forming a data frame from the list.