feat: filter users by github user id in the users list CLI command (#17029)

Add the `--github-user-id` option to `coder users list`, which makes the
command only return users with a matching GitHub user id. This will
enable https://github.com/coder/start-workspace-action to find a Coder
user that corresponds to a GitHub user requesting to start a workspace.

coderd/database/modelqueries.go

@@ -393,6 +393,7 @@ func (q *sqlQuerier) GetAuthorizedUsers(ctx context.Context, arg GetUsersParams,
 		arg.LastSeenAfter,
 		arg.CreatedBefore,
 		arg.CreatedAfter,
+		arg.GithubComUserID,
 		arg.OffsetOpt,
 		arg.LimitOpt,
 	)