fix: set options$engine to support quarto 1.3

[eitsupi]

Fix #109

See also quarto-dev/quarto-cli#4735

[cderv]

I think this is good. You just need to check that changing the option here does not have side effect with knitr::knit_engines$get("sql") that you use after.

I don't think so.

[cderv]

If you want to be complete in your workaround, you probably need to use

options$engine <- options$lang in case a user has change the lang option . Otherwise it won't apply

Don't you think ?

Suggested change

	options$lang <- options$lang %||% "elm"
	# Workaround for Quarto CLI 1.3
	# https://github.com/quarto-dev/quarto-cli/pull/4735
	options$engine <- "elm"
	options$lang <- options$lang %||% "elm"
	# Workaround for Quarto CLI 1.3
	# https://github.com/quarto-dev/quarto-cli/pull/4735
	options$engine <- options$lang

[eitsupi]

Thanks for the suggestion!
I will add a test to make sure lang changes are possible.

[eitsupi]

It seems that the lang option is respected by the knitr::knit() function even without this change.
Is there any possibility that fixing engine to "elm" will cause any problems?