`curl_translate()` does not respect multi line queries

[mgirlich]

Using chrome to get the curl command for a request one gets a multi line request, e.g.

curl 'https://community.rstudio.com/' \
  -H 'authority: community.rstudio.com' \
  -H 'accept-language: en-GB,en-US;q=0.9,en;q=0.8' \
  --compressed

Unfortunately, curl_translate() does not handle this correctly

httr2::curl_translate(r"{curl 'https://community.rstudio.com/' \
  -H 'authority: community.rstudio.com' \
  -H 'accept-language: en-GB,en-US;q=0.9,en;q=0.8' \
  --compressed}")
#> request("https://community.rstudio.com/") %>% 
#>   req_perform()
#>  request("\") %>% 
#>   req_perform()

^{Created on 2022-07-27 by the reprex package (v2.0.1)}