keycloak-js: add KeycloakUserInfo interface

[tomperr]

Area

adapter/javascript

Description

Currently, KeycloakUserInfo interface does not exist, but the code suggests that it should be implemented:

https://github.com/keycloak/keycloak/blob/9186327807477f4ca5c36d0adb6fd7b7f62b9721/js/libs/keycloak-js/dist/keycloak.d.ts#L461-L464

This new interface will then be used for the return value of loadUserInfo, that currently returns an untyped object

https://github.com/keycloak/keycloak/blob/9186327807477f4ca5c36d0adb6fd7b7f62b9721/js/libs/keycloak-js/dist/keycloak.d.ts#L618-L621

Discussion

No response

Motivation

Other methods and attributes have their own interfaces, such as userProfile and loadUserProfile using KeycloakProfile. It should be the same for userInfo and loadUserInfo with KeycloakUserInfo.

Details

Simply implement KeycloakUserInfo interface and add it to userInfo attribute and loadUserInfo method

[tomperr]

As it is an easy enhancement, I might do it by myself in the next days

[jonkoops]

Feel free to open up a PR for this, I am not sure why this is marked as 'private' but we might as well type it correctly.