Fix: content-type cannot be extracted from headers

[eightpigs]

Some related issues:

• Response is no longer formatted after 5bcaa10 #246
• Getting response json in 1 line #248

Causes

res.headers is not a key:value table, so it can't extract the content-type properly, as below:

{
  "Content-Type: application/json; charset=utf-8",
  "Date: Thu, 16 Nov 2023 15:54:51 GMT",
  "Content-Length: 614"
}

Fix

convert res.headers to key:value table.

And, I changed headers structures in context: context.result.headers.
Before, it was the above structure, now:

{
  ["Content-Type"]: "application/json; charset=utf-8",
  ["Content-Length"]: "614",
  "Date": "Thu, 16 Nov 2023 15:54:51 GMT"
}

---

This plugin is awesome, really straightforward and user-friendly. Thanks a lot for your hard work!

[onns]

fix for me, thanks.

taking one hour for me until I found headers' key is index..
I should be looking for issue or mr first next time...

[NTBBloodbath]

Hey, thank you so much per doing this. The truth is I hadn't had enough time to deal with this and make the patch. Thank you very much for contributing and also thanks to @onns for testing the changes!

Cheers