The current logic for decoding application/x-www-form-urlencoded is
overly restrictive and misses `Content-Type` headers with a character
encoding set, i.e., application/x-www-form-urlencoded; charset=UTF-8.
This fix harmonizes the logic for handling multipart/form-data
and application/x-www-form-urlencoded in the `parseBody` method of
request objects.
* refactor: support new `@cloudflare/worker-types`
* do not attach crypto to global
* denoify ignore serve-static for cloudlfare
* ignore the utility for cloudflare
* import types
