* SavedObjects tagging MVP (#79096)
* create xpack plugin skeleton, start to implement management section
* add tag creation modal
* first implementation of the tags table
* use InMemoryTable
* add edit modal and delete action
* update plugin list
* add tag list, fix types
* add capabilities check on client-side
* add tag combo box component
* add missing i18n keys
* fix privilege FTR tests
* add base structure for FTR tests
* fix feature ftr test
* use string literals for i18n
* create savedObjectsTaggingOss plugin, move API types to oss plugin, start to wire to SO management page.
* update plugin list
* fix types
* allow to use `_find` with multiple references
* add FTR test for _find API on references fields
* add _find integration tests
* update generated doc
* start to implement tag filtering on SO management section
* update generated docs
* wire tagging API to dashboard listing page
* fix i18n namespace
* fix type & tests
* update dashboard listing snapshots
* adapt FTR listingTable service to search for parsable queries
* wite tagging API to visualize listing
* update tagging plugin limits
* add server-side and client-side validation for tag create/edit
* rename title field to name
* fix types
* fix types bis
* add removeReferencesTo API to SOR/SOC
* update generated doc
* add server-side unit test for `savedObjectsTagging` plugin
* move tagging API types to its own file
* add savedObjectsTaggingOss mock
* add tags_cache tests
* add tests for client-side tag client
* extract uiApi to distinct files
* various API improvements
* add more tests
* add link between tag and so management sections + add connection counts
* add base functional test suite for tagging
* add more FTR tests
* improve feature control func test
* update codeowners
* update generated doc
* fix access to proxy modal
* adapt SO save modal to allow to add tag field
* add SO decorator registry and tag implementation
* add unit tests for SO tag decorator
* add functional tests for visualize integration
* add tag SO read permission for vis/dash feature
* add RBAC api integ tests
* add API integration tests
* add test for getTagConnectionsUrl
* add SOM test suite
* add dashboard integration suite
* remove test line
* add missing unit tests
* improve API types doc
* fix create modal save button label
* remove console.log
* improve doc
* self review
* add refresh interval for tag cache
* improve page object doc
* minor cleanup
* address review comments
* small layout fixes
* add initial focus
* use lazy accessor for tag request handler context
* adapt SOM export and export route to handle references
* remove icon from feature config due to master changes
* fix SO table tests
* update generated docs
* sort tags by name in filter dropdown and listing component
* wire SO tagging to dashboard save modal
* fix types
* - add 'create tag' action in tag selector
- add notifications on update/create/delete from management
- delete modal wording
* add description max length validation
* remove real-time validation
* fix i18n bundle id
* update expected size of savedObjectsTagging plugin
* use own useIfMounted
* update limit again, contract components cannot be lazy loaded atm.
* math is hard
* remove single usage of lodash for bundle size
* add async imports for create/edit modal
* add FTR test for 'create tag' action from tag selector
* allow 'create new' option to prepopulate name field
* extract savedObjectToTag
* add advancedSettings read user for security api_integ suite
* add audit login for security client wrapper
* use import type when possible
* wire SO tagging to lens visualization
* fix lens jest test
* Fix `create tag` option being selected when closing the selector dropdown
* add sorting to tag column from getTableColumnDef
* address some of restrry comments
* rename tag selector's setSelected option to onTagsSelected
* fix audit logging even type for saved_object_remove_references
* update plugin size limit to current size
* adapt maxlength validation wording
* remove selection column until we have batch action menu
* remove connections link when user lack read privilege to savedObjectManagement
* forbid registering multiple SO decorators with the same priority
* add so decorator test
* extract getTagFindReferences and create API mock
* update audit-logging ascidoc
* doc nit
* throw conflict error if update returns any failure
* use refresh=true as default
* wording nits
* export: rename `references` to `hasReference`
* update generated doc
* set description max length to 100
* do not initialize tag cache on anonymous pages
* split fetchObjectsToExport into two distinct functions
* change tag client `delete` call order
* tsdoc nits
* more nits
* add README for oss plugin
* add oss plugin start tests
* SavedObject.find: rename `references` to `hasReference`
* change section description label
* remove url prefix constants
* last nits and comments
* update generated doc
# Conflicts:
# .github/CODEOWNERS
# packages/kbn-optimizer/limits.yml
# x-pack/scripts/functional_tests.js
* fix FTR mapping files for 7.x