v26.0.0
src: use `Utf8Value` and `TwoByteValue` instead of V8 helpers
src: use `Global` for storing resource in Node-API callback scope
src: initial enablement of IsolateGroups
src: fixup errorhandling more in various places
src: add initial support for ESM in embedder API
src: fix winapi_strerror error string
src: cleanup unused headers