[Feature]: support LoaderContext.loadModule

[h-a-n-a]

What problem does this feature solve?

Port webpack LoaderContext.loadModule to rspack.
See: https://webpack.js.org/api/loaders/#thisloadmodule

What does the proposed API of configuration look like?

Aligned to webpack's implementation.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. If this issue is still affecting you, please leave any comment (for example, "bump"). We are sorry that we haven't been able to prioritize it yet. If you have any new additional information, please include it with your comment!