improve experiments.mjs to be more compatibly with node.js ESM
- add support for `type: "module"` in package.json
- add support for `*.cjs`
- enable strict ESM for data uris with `text/javascript` or `application/javascript`
- disallow not fully specified requests in imports `*.mjs` or `type: "module"`
add `descriptionData` rule condition to match package.json info
fix passing resolveOptions along context modules
Tobias Koppers