to_curl: Improve quoting, update options

[blyxxyz]

The quoting done by shell-escape is very simple and conservative, not great for user-readable output. I recently wrote os_display which I think is more suitable here.

I also went through all the options to bring them up to date.

[blyxxyz]

The ARM tests get stuck on inferred_json_javascript_output. I can't reproduce that locally, and it seems impossible for it to be caused by these commits, so I don't know what's going on.

[ducaale]

All tests have passed now (there is proxy_all_proxy that fails silently but it can be adressed in a later PR).

If ARM tests start to fail again, perhaps we could try limiting the number of parallel qemu-arm invocations in integration tests?

[blyxxyz]

I haven't done a new os_display release yet, I'll do that if this looks ok.

[ducaale]

Yup, I can confirm the quoting works correctly in Powershell now.

cargo run -- httpbin.org/post x=3 --curl
    Finished dev [unoptimized + debuginfo] target(s) in 0.36s
     Running `target\debug\xh.exe httpbin.org/post x=3 --curl`
curl http://httpbin.org/post -H 'content-type: application/json' -H 'accept: application/json, */*;q=0.5' -d '{\"x\":\"3\"}'

PS C:\Users\shara\Desktop\projects\xh> curl http://httpbin.org/post -H 'content-type: application/json' -H 'accept: application/json, */*;q=0.5' -d '{\"x\":\"3\"}'
{
  "args": {},
  "data": "{\"x\":\"3\"}",
  "files": {},
  "form": {},
  "headers": {
    "Accept": "application/json, */*;q=0.5",
    "Content-Length": "9",
    "Content-Type": "application/json",
    "Host": "httpbin.org",
    "User-Agent": "curl/7.79.1",
    "X-Amzn-Trace-Id": "Root=1-61ec4860-1bf0ad7325e7ce3746ae47ca"
  },
  "json": {
    "x": "3"
  },
  "origin": "92.40.172.172",
  "url": "http://httpbin.org/post"
}

[ducaale]

Approved 🎉