Add kulala-http extension

[HusuSama]

Zed integration for Kulala, including syntax highlighting, code completion, and request sending.

repo: https://github.com/HusuSama/zed-kulala-http

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[HusuSama]

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[MrSubidubi]

Thanks for this! Could you elaborate how this is different from what #3963 is trying to achieve? Thanks!

[HusuSama]

@MrSubidubi
Yes, this might be the same implementation as in that PR, but I'd like to address some questions that PR didn't answer. The main differences between kulala http and zed-http are as follows:

1. Syntax highlighting: kulala http and zed-http use different highlighting implementations. kulala http provides more refined syntax highlighting and supports additional formats such as REST.
2. Autocompletion: zed-http does not support autocompletion, whereas kulala http enables autocompletion via LSP (Language Server Protocol).
3. Extended features: kulala http offers more extended functionalities, although these may require the kulala_cli tool to actually send requests and fully utilize those features.

[HusuSama]

@MrSubidubi
This PR doesn’t include a repository link, so I can’t tell whether its implementation differs from mine. To the best of my knowledge, I’m the only one who has discussed this specific feature with the author of Kulala. The original discussion is here:
mistweaverco/kulala.nvim#794
Clarifying the differences between our approaches could help determine the best way forward.🫠