feat: add bulk edit mode for request headers

[chriscasola]

Description

This PR adds a bulk edit mode for request headers.

Currently this is only available on the headers tab for requests. The headers entry for collections uses a completely different component for some reason. I can make a follow up change that consolidates to a shared header editing component and uses it in both places.

Closes #185

Contribution Checklist:

• The pull request only addresses one issue or adds one feature.
• The pull request does not introduce any breaking changes
• I have added screenshots or gifs to help explain the change if applicable.
• I have read the contribution guidelines.
• Create an issue and link to the pull request.

Note: Keeping the PR small and focused helps make it easier to review and merge. If you have multiple changes you want to make, please consider submitting them as separate pull requests.

[chriscasola]

@helloanoop would you consider merging this? It would make use of Bruno much easier for people at our company, where we frequently need to copy/paste a list of HTTP headers into the request.

[rzvxa]

Hello, This feature is amazing and I really miss it after migrating from the postman.
My only issue with this PR is with stopping at headers and leaving out other sections for example query params.
We should generalize this implementation so we can leverage the bulk editor in every key-value editor in Bruno.
I would happily pitch in some time toward implementing this feature, Just let me know if you want me to work on this PR with you.

Have a great day,
Keep up the good work.

[rzvxa]

I also hope we can merge it before version 2, I'm not sure when is the deadline for V2 but this feature is a must and I don't believe it is that big of change. Why delay merging it till the next major release? @helloanoop

[chriscasola]

It would be awesome to get this merged. Can you help with that @flaviopangracio ?

[Bervenia]

@chriscasola / @rzvxa Out of curiosity, what's the next steps after @flaviopangracio approved the changes?

[rzvxa]

@Bervenia I don't know, To be frank, I've lost interest in the project. I stick to the curl and swagger these days.

[sanjai0py]

Hello everyone following this PR. We apologize for the delay in merging this PR. The Bruno team has been working on improving the security functionalities of Bruno. We will get this PR merged soon!

Also, apologize to @rzvxa for the inconvenience caused. If you have time, please provide us with your feedback on how we could improve. Your input is highly valued and appreciated!

[BenSnellgrove]

I've suggested a header clone button as an interim solution. Its messy and doesn't do everything a bulk edit mode would do, but since this PR is over a year old my hope is it will at least bring attention to this lack of functionality

[thodzai]

Would be nice to have it in Vars Tab and Collection Environments also.
Will it coming in version 1.38.2 @chriscasola ?
Thanks for your hard work.

[meostyles]

FWIW the lack of this feature makes it difficult to migrate from Postman to Bruno. So delaying merging of the PR by a year and a half seems like a mistake