Add basic NetBSD support

[0323pin]

closes #8541

Tests:
Summary [ 149.522s] 469 tests run: 463 passed, 6 failed, 0 skipped
FAIL [ 0.095s] naga::naga snapshots::convert_snapshots_spv
FAIL [ 0.387s] wgpu-benchmark::bench/wgpu-benchmark Computepass Encoding
FAIL [ 0.386s] wgpu-benchmark::bench/wgpu-benchmark Device::create_bind_group
FAIL [ 0.378s] wgpu-benchmark::bench/wgpu-benchmark Device::create_buffer
FAIL [ 0.389s] wgpu-benchmark::bench/wgpu-benchmark Renderpass Encoding
FAIL [ 0.075s] wgpu-test::wgpu-validation api::instance::multi_instance::multi_instance

Connections
Link to the issues addressed by this PR, or dependent PRs in other repositories

When one pull request builds on another, please put "Depends on
#NNNN" towards the top of its description. This helps maintainers
notice that they shouldn't merge it until its ancestor has been
approved. Don't use draft PR status to indicate this.

Description
Describe what problem this is solving, and how it's solved.

Testing
Explain how this change is tested.

Squash or Rebase?

If your pull request contains multiple commits, please indicate whether
they need to be squashed into a single commit before they're merged,
or if they're ready to rebase onto trunk as they stand. In the
latter case, please ensure that each commit passes all CI tests, so
that we can continue to bisect along trunk to isolate bugs.

Checklist

• Run cargo fmt.
• Run taplo format.
• Run cargo clippy --tests. If applicable, add:
  • --target wasm32-unknown-unknown
• Run cargo xtask test to run tests.
• If this contains user-facing changes, add a CHANGELOG.md entry.

[0323pin]

Apparently, I'm not allowed to push changes to the CI.
Here's the intended diff,

--- .github/workflows/ci.yml	2025-12-07 15:43:01.974209261 +0100
+++ /home/pin/ci.yml	2025-12-07 15:40:32.185570903 +0100
@@ -134,6 +134,13 @@
             tier: 2
             kind: wgpu-only
 
+          # NetBSD
+          - name: NetBSD x86_64
+            os: ubuntu-24.04
+            target: x86_64-unknown-netbsd
+            tier: 2
+            kind: wgpu-only
+
           # Android
           - name: Android aarch64
             os: ubuntu-24.04

[cwfitzgerald]

Why are you not allowed to push to CI? We don't have any such rule

[0323pin]

Why are you not allowed to push to CI? We don't have any such rule

This might sound stupid but, I cannot push to my own fork.

To https://github.com/0323pin/wgpu
 ! [remote rejected]     trunk -> trunk (refusing to allow a Personal Access Token to create or update workflow `.github/workflows/ci.yml` without `workflow` scope)
error: failed to push some refs to 'https://github.com/0323pin/wgpu'

[0323pin]

Ok, it looks like I might need to generate a new token with the necessary permissions, https://github.com/orgs/community/discussions/26254

Most probably I didn't think I would need this.