extract_display_string: Make a string to display from a condition
In burchill/catchr: Taking the Pain Out of Catching and Handling Conditions

Turn a condition into a string comprised of its message, name, and call, in a variety of configurations.

1	extract_display_string(cond, cond_name = NA, include_call = T)

`cond`	A condition to display or turn into a string
`cond_name`	Either the name of the condition you want to display, `NA` if you want the condition name to be assigned by default (the first class of the condition), or `NULL` if you don't want the condition type displayed at all.
`include_call`	A logical; if `FALSE` the call won't be included in the string even if present in the condition.