Move complex Expressions functions core_plugins/interpreter 👉 src/plugins/data

[streamich]

This ticket could be split in two: esaggs would be owned by Search service and visualization would be owned by visualizations plugin.

Move complex Expressions functions (esaggs and visualization) next to where their core functionality is implemented.

• Move complex Expressions functions
  • esaggs - move to data plugin Search service. Depends on:
    • ui/vis/request_handlers/courier
    • ui/vis/agg_configs.js
    • ui/visualize/loader/pipeline_helpers/utilities
    • ui/chrome
    • ui/courier/search_source
    • ui/filter_manager/query_filter
  • visualization - move to visualizations plugin. Depends on:
    • ui/registry/vis_request_handlers (deprecated?)
    • ui/registry/vis_response_handlers (deprecated?)
    • ui/registry/vis_types
    • ui/filter_manager/query_filter
    • ui/persisted_state

Parent issue: #44153

[elasticmachine]

Pinging @elastic/kibana-app-arch