Implement a date picker for code hotspots

Problem to solve

Currently users cannot select a specific date for code hotspots, which means that they cannot drill down during a specific sprint since we only provide last 30 days periods.

Intended users

Further details

Proposal

As per the design here: https://gitlab.com/gitlab-org/gitlab-ee/issues/12683

Permissions and Security

Inline with the rest of the analytics pages now, this feature will be available for Premium users only.

Users should only see groups/projects/subgroups that they have a reporter access to and above.

For gitlab.com, we will only show the groups, projects, subgroups that fall under namespaces of silver (aka premium) and above. For on prem: only instances on premium and above.

Documentation

Testing

What does success look like, and how can we measure that?

What is the type of buyer?

Links / references