Add filters for Productivity Analytics

What does this MR do?

This is one of many MRs for the Productivity Analytics page.

Adds the relevant filters to the Productivity Analytics page and updates the store accordingly. It utilizes the following components:

• Groups dropdown (see https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/14595)
• Projects dropdown (see https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/14595)
• Filtered search bar (our common search bar)
• Daterange dropdown (see https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/14681)

Note: The group and project dropdowns are a temporary solution (see https://gitlab.com/gitlab-org/gitlab-ee/issues/12079#note_185515958) until we have a Vue component for the filtered search bar in place which will eventually support filtering by groups and projects as well.

This is behind the analytics feature flag.

Screenshots

No group selected

Desktop	Mobile

With a group selected

Desktop	Mobile

The filter bar will be used on the Productivity Analytics page:

productivity_analytics

CE Port: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/31097

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation created/updated or follow-up review issue created
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content

Performance and testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers

Security

If this MR contains changes to processing or storing of credentials or tokens, authorization and authentication methods and other items described in the security review guidelines:

• Label as security and @ mention @gitlab-com/gl-security/appsec
• The MR includes necessary changes to maintain consistency between UI, API, email, or other methods
• Security reports checked/validated by a reviewer from the AppSec team