[IceBox] Discover Unified Components

[kertal]

Note This is a meta-issue that contains link to closed issues, that have a legitimate impact, but cannot be prioritized for the foreseeable future. We will leave these icebox meta issues open as a place to track improvements that can be made to a category of feature.

## Unified Data Table
- [ ] #3735
- [ ] #36592
- [ ] #57328
- [ ] #98431
- [ ] #99115
- [ ] #99775
- [ ] #101455
- [ ] #128002
- [ ] #133729
- [ ] #134800

## Unified Doc Viewer
- [ ] #22624

## Unified Field List
- [ ] #98411
- [ ] #144661

## Unified Histogram
- [ ] #68884

[elasticmachine]

Pinging @elastic/kibana-data-discovery (Team:DataDiscovery)