Issue #2291223 by slashrsm: Initial EntityBrowser entity.
Issue #2291223 by slashrsm: Add EntityBrowserDisplay plugin.
Issue #2291223 by slashrsm: Add display to entity browser config entity.
Issue #2291223 by slashrsm: Add EntityBrowserTab.
Issue #2291223 by slashrsm: Fix typo.
Issue #2291223 by slashrsm: Rename tabs to widgets.
Issue #2291223 by slashrsm: Add selection display plugin manager, interface and annotation object.
Issue #2291223 by slashrsm: Add widget selector plugin.
Issue #2291223 by slashrsm: Add configuration schema and bags for all plugins.
Issue #2291223 by slashrsm: Match class member names with config schema.
Issue #2291223 by slashrsm: Add another directory level for all entity browser plugin types.
Issue #2291253 by slashrsm: Create very basic implementation of first selection display plugin.
Merge pull request #2 from slashrsm/2291223_entity_browser

2291223 entity browser
Issue #2291247 by slashrsm: Add very basic implementation of display plugin.
Issue #2308173 by slashrsm: Very basic implementation of widget selector plugin.
Issue #2308173 by slashrsm: Fix typo.
Issue #2291239 by slashrsm: Basic implementation of widget plugin.
by slashrsm: Few fixes to EntityBrowser - mostly geters related to plugin bags.
Merge pull request #7 from slashrsm/eb_few_fixes

Basic structure follow-up: Few fixes to EntityBrowser - mostly geters related to plugin bags
Merge pull request #3 from slashrsm/2291253

Basic implementation of NoDisplay selection display plugin