Wasm only label

[Netail]

Describe the feature

I've recently created a plugin for SWC, which basically only includes a WASM file, package.json & README (https://npmx.dev/package/swc-plugin-transform-webpack-context).

It might be nice to list a tag if a package is WASM only, like with Types, ESM/Commonjs:

Additional information

• Would you be willing to help implement this feature?

Final checks

• Read the contribution guide.
• Check existing issues.