[Feature Request]: Change ui/srv_add_filter_state to include FilterGroups

[gogonzo]

Feature description

We still need a decision where to locate this module (should it stay in the same place or shown when + is clicked or in the filter-manager).

Except a possible location change we need to enable option to add a filter-group.

• this pickerInput should allow selecting multiple values. After selecting value(s) srv_add_filter_state should decide if it's a InteractiveFilterState, FixedFilterState or FilterGroup (more than 1 selected). The new objects should be added to the ReactiveQueue.
• The dropdown list should contain existing FilterStates and filter-columns. All these object can be combined within a group
• It the new group contains existing FilterState then this FilterState should be duplicated and included into the group (don't move-remove existing FilterState)

[asbates]

Should we have a separate issue to implement a filter group with the new API? If not it would need to be a part of this issue.

[donyunardi]

At the moment, we will not be pursuing this feature.