Adds support for rspack by optionally providing access to html-plugin hooks through options.

The new option, HtmlPlugin, defaults to the peer-dependency html-webpack-plugin, but will not fail until the plugin runs if absent. rspack.HtmlRspackPlugin can then be supplied instead.

All tests pass (NODE_OPTIONS=--openssl-legacy-provider was necessary for webpack 4, though), and a new end to end test suite has been added for rspack.

There are a few notable changes that was necessary to make this run:

• excludeHtmlNames/includeHtmlNames now runs on outputName instead of plugin.options.filename, since rspacks html-plugin doesn't reliably provide raw plugin data in hooks. I believe this is the more correct option to use, but it may be a breaking change in some niche situations.
• Extracting parent chunk name has been slightly modified to avoid hard-coded references to webpack.

Testing has been modified to fit this new option:

• Pass the new HtmlPlugin option
• Set compiler.outputFileSystem before running compiler
• Handle non-string compilation errors
• Async chunk fixture should use import() instead of require.ensure
• Minor differences with rspack source map generation and output casing

Lock-file has been completely updated, since yarn seems to have changed their download URLs since it was last run.