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/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"
 )