[keycloak-dev] Krb5 direct support

I've got a public client that I would like to use a direct flow with something similar to the grant_type=password, but instead would like to use kerberos spnego. I did try to edit the password flow to use the krb plugin rather then the password one but it complains about it not being configured, but regular web based krb spnego works fine so the plugin is configured properly. How hard would it be to add a grant_type=krb5 option to the code? Thanks, Kevin