feat(webpack): use backported version of watchpack2 and latest chokidar

[pi0]

Types of changes

• Bug fix (a non-breaking change which fixes an issue)
• New feature (a non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Description

Current version of nuxt uses webpack@4 that depends on watchpack@1

warning nuxt > @nuxt/webpack > webpack > watchpack > watchpack-chokidar2 > chokidar@2.1.8: Chokidar 2 will break on node v14+. Upgrade to chokidar 3 with 15x less dependencies.

This PR replaces watcher to use watchpack@4 (backported from webpack@5) to use latest version of chokidar

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly. (PR: #)
• I have added tests to cover my changes (if not applicable, please state why)
• All new and existing tests are passing.