Feature request: JWE generation and validation

**Is your feature request related to a problem? Please describe.**
I'm always frustrated when I can’t be sure if I’m generating the correct data based on header payload and signature.

**Describe the solution you'd like**
It would be nice to have something similar to jwt.io but works for generating and verification for JWE, with support for various encryptions and keys types.

**Describe alternatives you've considered**
Tried other websites but there isn’t many, and the ones I found does not seem to work properly.

**Additional context**
I saw there is a JWT verify and some others in the software already but those are not for JWE. In fact the existing recipe for validating and regenerating a JWS is not great (for custom header parameters) but that’s another ticket for another day (JWT.io works great for this currently).