refactor(core): Remove attohttpc in favor of reqwest

[FabianLars]

ref: for example #6415 and #5344

What kind of change does this PR introduce?

• Bugfix - yes i count this as a bugfix considering how many issues users had with atto
• Feature
• Docs
• New Binding issue #___
• Code style update
• Refactor
• Build-related changes
• Other, please describe:

Does this PR introduce a breaking change?

• Yes, and the changes were approved in issue #___
• No, well... Technically it is because of the enum variants but i think it's worth it.

Checklist

• When resolving issues, they are referenced in the PR's title (e.g fix: remove a typo, closes #___, #___)
• A change file is added if any packages will require a version bump due to this PR per the instructions in the readme.
• I have added a convincing reason for adding this feature, if necessary

[FabianLars]

that clippy json output gives me a headache lol. Also, no idea why i couldn't trigger that warning locally 🤔

[lucasfernog]

Usually that happens when I don't have latest cargo. Or not using the right feature flags.

[FabianLars]

ahhhhh, i was in the root dir and not in core/tauri ...