generate_distance_matrix: Generate a distance matrix from a matrix of annotations
In andrewGhazi/malacoda: Bayesian Analysis of High-Throughput Genomic Assays

Given an nxd matrix of variant annotations, produce an nxn distance matrix describing the inter-variant distances in annotation space

generate_distance_matrix(
  annotations,
  log_distance = FALSE,
  scale_annotations = TRUE,
  verbose = TRUE
)

`annotations`	an n x d data frame of annotations
`log_distance`	a logical indicating to use the log1p of the distances (TRUE) or the raw euclidean distances (FALSE)
`scale_annotations`	logical indicating whether to base::scale to center and scale annotations
`verbose`	logical indicating whether to print messages