Transformations: Add Group to Nested Tables Transformation (#79952)

* Stub group to subframe transformation

* Get proper field grouping

* Mostly working but fields not displaying 😭

* Fix display processing in nested tables

* Modularize and start merging groupBy and groupToSubrame

* Get this working

* Prettier

* Typing things

* More types

* Add option for showing subframe table headers

* Prettier

* Get tests going

* Update tests

* Fix naming and add icons

* Betterer fix

* Prettier

* Fix CSS object syntax

* Prettier

* Stub alert for calcs with grouping, start renaming

* Add logic to show warning message for calculations

* Add calc warning

* Renaming and feature flag

* Rename images

* Prettier

* Fix tests

* Update feature toggle

* Fix error showing extra blank row

* minor code cleanup

---------

Co-authored-by: nmarrs <nathanielmarrs@gmail.com>

pkg/services/featuremgmt/registry.go

@@ -1310,5 +1310,13 @@ var (
 			Owner:        grafanaObservabilityTracesAndProfilingSquad,
 			Created:      time.Date(2024, time.January, 2, 12, 0, 0, 0, time.UTC),
 		},
+		{
+			Name:         "groupToNestedTableTransformation",
+			Description:  "Enables the group to nested table transformation",
+			Stage:        FeatureStagePublicPreview,
+			FrontendOnly: true,
+			Owner:        grafanaDatavizSquad,
+			Created:      time.Date(2024, time.February, 5, 12, 0, 0, 0, time.UTC),
+		},
 	}
 )

pkg/services/featuremgmt/toggles_gen.csv

@@ -154,3 +154,4 @@ onPremToCloudMigrations,experimental,@grafana/grafana-operator-experience-squad,
 alertingSaveStatePeriodic,privatePreview,@grafana/alerting-squad,2024-01-22,false,false,false
 promQLScope,experimental,@grafana/observability-metrics,2024-01-29,false,false,false
 nodeGraphDotLayout,experimental,@grafana/observability-traces-and-profiling,2024-01-02,false,false,true
+groupToNestedTableTransformation,preview,@grafana/dataviz-squad,2024-02-05,false,false,true

pkg/services/featuremgmt/toggles_gen.go

@@ -626,4 +626,8 @@ const (
 	// FlagNodeGraphDotLayout
 	// Changed the layout algorithm for the node graph
 	FlagNodeGraphDotLayout = "nodeGraphDotLayout"
+
+	// FlagGroupToNestedTableTransformation
+	// Enables the group to nested table transformation
+	FlagGroupToNestedTableTransformation = "groupToNestedTableTransformation"
 )