[UnifiedFieldList] Convert from a plugin into a package (#158718)

- Closes https://github.com/elastic/kibana/issues/149336

## Summary

This PR converts `unifiedFieldList` plugin into a new
`@kbn/unified-field-list` package.

Had to also move some deps:
- from `uiActions` plugin to the existing `@kbn/ui-actions-browser`
package
- from `data` plugin to a new `@kbn/data-service` package

Please test that Field Stats from the package are still working on your
pages.

---------

Co-authored-by: kibanamachine <42973632+kibanamachine@users.noreply.github.com>

examples/unified_field_list_examples/kibana.jsonc

@@ -13,7 +13,6 @@
       "inspector",
       "kibanaUtils",
       "unifiedSearch",
-      "unifiedFieldList",
       "data",
       "dataViews",
       "dataViewFieldEditor",

examples/unified_field_list_examples/public/field_list_item.tsx

@@ -28,7 +28,7 @@ import {
   hasQuerySubscriberData,
   RenderFieldItemParams,
   useQuerySubscriber,
-} from '@kbn/unified-field-list-plugin/public';
+} from '@kbn/unified-field-list';
 import { generateFilters } from '@kbn/data-plugin/public';
 import type { CoreStart } from '@kbn/core-lifecycle-browser';
 import type { AppPluginStartDependencies } from './types';

examples/unified_field_list_examples/public/field_list_sidebar.tsx

@@ -26,7 +26,7 @@ import {
   useExistingFieldsFetcher,
   useGroupedFields,
   useQuerySubscriber,
-} from '@kbn/unified-field-list-plugin/public';
+} from '@kbn/unified-field-list';
 import { FieldListItem, FieldListItemProps } from './field_list_item';
 
 export interface FieldListSidebarProps {

examples/unified_field_list_examples/public/plugin.ts

@@ -58,7 +58,7 @@ export class UnifiedFieldListExamplesPlugin
       links: [
         {
           label: 'README',
-          href: 'https://github.com/elastic/kibana/tree/main/src/plugins/unified_field_list/README.md',
+          href: 'https://github.com/elastic/kibana/tree/main/packages/kbn-unified-field-list/README.md',
           iconType: 'logoGithub',
           target: '_blank',
           size: 's',

examples/unified_field_list_examples/tsconfig.json

@@ -23,10 +23,10 @@
     "@kbn/i18n-react",
     "@kbn/i18n",
     "@kbn/dom-drag-drop",
-    "@kbn/unified-field-list-plugin",
     "@kbn/core-lifecycle-browser",
     "@kbn/charts-plugin",
     "@kbn/field-formats-plugin",
     "@kbn/data-view-field-editor-plugin",
+    "@kbn/unified-field-list",
   ]
 }