* perf(v2): reduce bundle size significantly with super short chunk name and registry
* changelog
* use hash:8 as id for better long term caching
* even shorter filename. slice contenthash
* refactor(v2): add typing for docusaurus/core
* wip: last working
* refactor(v2): add typing for @docusaurus/core
* prettier
* dont run in parallel otherwise some are uncompiled
* nits
* more typing
* more typing
* nits
* type commands
* nits