Traces Panel: Add new Traces Panel visualization (#47534)

* Panel

* Support tempo dash variables

* Support tempo explore variables

* Only show span links for explore

* Cleanup

* Added tests

* apply variables to search

* Tests for search variables

* Handling no data

* Interpolation and tests

* TracesPanel tests

* More tests

* Fix for backend test

* Manager integration test fix

* Traces doc and updated visualizations index doc

* Logs for this span

* Search, scrollToTop, other improvements

* Refactor to extract common code

* Removed TopOfViewRefType optional

* Remove topOfViewRef optional

* Removed another optional and fixed tests

* Test

* Only show search bar if trace

* Support traces panel in add to dashboard

* Self review

* Update betterer

* Linter fixes

* Updated traces doc

* Ahh, moved the for more info too

* Updated betterer.results

* Added new icon

* Updated expectedListResp.json

pkg/plugins/manager/manager_integration_test.go

@@ -126,6 +126,7 @@ func verifyCorePluginCatalogue(t *testing.T, pm *PluginManager) {
 		"candlestick":    {},
 		"news":           {},
 		"nodeGraph":      {},
+		"traces":         {},
 		"piechart":       {},
 		"stat":           {},
 		"state-timeline": {},