feat: rspack support and 2.0.0

close #45

Works on rspack now
(Breaking) Minimal Node.js requirement changed from 14.17.16 to 18.20.5
(Breaking) Deprecated option BackgroundOptions.entry is removed. Use pageEntry and/or serviceWorkerEntry instead.
(Breaking) Deprecated option BackgroundOptions.manifest is removed.
(Breaking) Option noWarningDynamicEntry has been renamed to noDynamicEntryWarning.
(Breaking) background.pageEntry cannot be the same as background.serviceWorkerEntry.
Now devServer.hot is set to only by default.
Now output.environment.dynamicImport is set to true by default.
Now output.hotUpdateChunkFilename is set to hot/[id].[fullhash].js by default.
Now output.hotUpdateMainFilename is set to hot/[runtime].[fullhash].json by default.

awesome-webextension / webpack-target-webextension