Add option to ignore alg type

[OscBacon]

Summary

Hey, first off, amazing tool!

When using the firebase emulator, the jwt has alg: "none"
I would like the cli to still decode the jwt for debug purposes. Right now, I'm falling back to the debugger on jwt.io

Steps to reproduce

Example jwt:

eyJhbGciOiJub25lIiwidHlwIjoiSldUIn0.eyJhdWQiOiJodHRwczovL2lkZW50aXR5dG9vbGtpdC5nb29nbGVhcGlzLmNvbS9nb29nbGUuaWRlbnRpdHkuaWRlbnRpdHl0b29sa2l0LnYxLklkZW50aXR5VG9vbGtpdCIsImlhdCI6MTcyMTgzMjc1NywiZXhwIjoxNzIxODM2MzU3LCJpc3MiOiJmaXJlYmFzZS1hdXRoLWVtdWxhdG9yQGV4YW1wbGUuY29tIiwic3ViIjoiZmlyZWJhc2UtYXV0aC1lbXVsYXRvckBleGFtcGxlLmNvbSIsInVpZCI6InZCNDQ0WU9nZ21LWk5XVzZQQ0NRUTM2RTFQT2IiLCJjbGFpbXMiOnsiZG9tYWluIjoiaHR0cDovL2xvY2FsaG9zdDo1MTc0In19.

Expected behavior

As per the jwt.io debugger:

Header

{
  "alg": "none",
  "typ": "JWT"
}

Payload

{
  "aud": "https://identitytoolkit.googleapis.com/google.identity.identitytoolkit.v1.IdentityToolkit",
  "iat": 1721832757,
  "exp": 1721836357,
  "iss": "[email protected]",
  "sub": "[email protected]",
  "uid": "vB444YOggmKZNWW6PCCQQ36E1POb",
  "claims": {
    "domain": "http://localhost:5174"
  }
}

[mike-engel]

Hi @OscBacon, thanks for the suggestion! Unfortunately, it doesn't look like jsonwebtoken will be supporting this, which would be required. I'll keep this open as a tracking issue

[mike-engel]

Actually, I think this is a dupe of #253