Bakers Gamma for two k matrices

```
bakers_gamma_for_2_k_matrix(
k_matrix_dend1,
k_matrix_dend2,
to_plot = FALSE,
...
)
```

## Arguments

- k_matrix_dend1
a matrix of k cluster groupings from a dendrogram

- k_matrix_dend2
a (second) matrix of k cluster groupings from a dendrogram

- to_plot
logical (FALSE). Should a scaterplot be plotted, showing the
correlation between the lowest shared branch between two items in the two
compared trees.

- ...
not used

## Value

Baker's Gamma coefficient.