feat: Include benches folder in the folder-benchmark for Rust's conventional benchmark directory

[TymonMarek]

Description

Following the recommended Rust project structure, the benches directory contains the benchmarking code for a crate. This is currently not correctly listed as a special folder for this plugin:

On top of this, benches is becoming a more commonly used directory across many languages to hold benchmarking code.

This pull requests does not add any additional icons to the repository, only adding benches as a new member of folder-benchmark within folderIcons.ts.

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I apologise if my pull request doesn't follow the conventions or rules stated in your repository. I rarely make pull requests and am not certain if this is correct, so please let me know if it isn’t. I’m always open to learning.

[Copilot]

Pull request overview

Adds Rust’s conventional benches/ directory to the existing folder-benchmark folder icon mapping so benchmark folders are recognized more consistently across projects.

Changes:

• Add benches to the folder-benchmark folder name list in folderIcons.ts.
• Minor formatting change at end-of-file.

[github-actions]

Merge Successful

Thanks for your contribution! 🎉

The changes will be part of the upcoming update on the Marketplace.