act on last error

[moodymudskipper]

Get info on last error using :

geterrmessage()
.traceback()
rlang::last_error() # when relevant

Set an active binding to e that will create a list of actions relevant to error.

These might be suggestions to fix, calls to rstudioapi to go at the right place in the right script, suggestions for good practice, filter the call stack to show only the relevant error, add test for this behaviour (creating a reprex at the chosen level from the inputs), suggestions on typos or common mistakes (e.g. if (length(x ==1))...), with action to fix automatically.

unlike fcuk we don't use options(error=) so we don't conflict with any package.

rules can be defined a bit like in tricks, in fact this could be part of {tricks}