Document webpack change: feat: Add support for injecting sourcemap debug ids

[webpack-bot]

A pull request by @timfish was merged and maintainers requested a documentation change.

See pull request: webpack/webpack#18947

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What kind of change does this PR introduce?

Adds support to SourceMapDevToolPlugin for injecting debug IDs into source files and sourcemaps as per the TC39 proposal.

• Sentry users have been relying on debug ids in production for a number of years. Sentry process hundreds of millions of files per month containing debug ids!
• A Github search suggests debug ids are also used by Backtrace and Expo
• Bun added debug id injection to it's bundler when they added sourcemap support
• Rolldown added support in v0.14.0
• Rollup added
  support in v4.25.0

Did you add tests for your changes?

Not yet but will add them if this is likely to get merged!

Does this PR introduce a breaking change?

No

What needs to be documented once your changes are merged?

I guess the SourceMapDevToolPlugin docs need updating?

Ideally I would like this option to be accessible from the top-level webpack config. I toyed with the idea of adding it to the devtool option (ie. hidden-source-map-debug-ids) but this option already contains a lot of different combinations of options.

[alexander-akait]

All *-source-map now have *-source-map-debugids also