Add a permission to update a target on Power BI Metrics

Currently, when we define a new Power BI Metric Role, we can choose if role members can update Current|Status|Notes but there is no option to allow target updates.

Only people with Edit permissions on the whole scorecard can update a metric target.

We have a business scenario where people in charge of updating metrics current values are also responsible of defining the target. But we cannot give them edit permissions on the whole scorecard because they do not manage all metrics!