What is the 'magic comments' feature in webpack related to code splitting?
Webpack's 'magic comments' are special inline directives that provide granular control over chunk creation and loading during code splitting. When used with dynamic imports, these comments allow developers to specify chunk names, loading priorities, and other behaviors. For example, `import(/* webpackChunkName: 'my-chunk' */ './module')` names the chunk, while `import(/* webpackPrefetch: true */ './module')` tells webpack to generate prefetch hints. This feature gives developers fine-grained control over how their code is split and loaded, enabling advanced optimization strategies.