[Feature Request] Variable to return an array of roles for a specified user

[CrowbarToolsRobot]

SReject via Discord:

Add variable that looks up and retrieves all roles for a user

Returns an array of roles for the current $user

$userRoles

Returns an array of all roles for the specified username

$userRoles[username]

Returns an array of specific roles for the username

$userRoles[username, all]
$userRoles[username, firebot]
$userRoles[username, custom]
$userRoles[username, twitch]
$userRoles[username, team]

For cases were the user cannot be located, and empty array should be returned

[CKY-]

#1896

[zunderscore]

Added in v5.55.0