Create an AI skill / codemod for migrating from v3 to v4

Which package is the feature request for? If unsure which one to select, leave blank

None

Feature

Since we are in the age of AI, we should build out a quick and simple skill or just a generic markdown file that npx crawlee migrate-to-v4 (or w/e the command will be) will return so AI models can tackle refactoring for the users

Motivation

v4 is coming

Ideal solution or implementation, and any additional constraints

Focus on markdown for AI, if a literal codemod is doable and small then that can also be built

Alternative solutions or implementations

Not doing this and letting users tackle it by hand with random results

Other context

No response