[Bug] twitch token provides no token when using Public client type

[Xemdo]

What is the problem?

When a Client ID is set to the client type of "Public", twitch token -u doesn't work.
This seems to be happening because authorization code grant flow doesn't work alongside Device Code Flow, and twitch token doesn't support implicit auth.

Likely solution is to separate DCF and authorization code grant flow, and return an error message when trying to use standard twitch token -u with a public client.

Operating System

All

Architecture Version (x86, x64, arm, etc)

All

Steps to reproduce

twitch token -u with a Public client

Relevant log output

> twitch token -u --client-id=5g04g9bfn1z60xk22shoj3hmy4bymt
Opening browser. Press Ctrl+C to cancel...
2024/02/29 15:28:04 Waiting for authorization response ...
2024/02/29 15:28:05 Closing local server ...
2024/02/29 15:28:05 User Access Token:
Refresh Token:
Expires At: 2024-02-29 23:28:05.8458449 +0000 UTC
Scopes: []