Transformations: Add regression analysis transformation (#78457)

* regression analysis first dragt

* Swap to better regression libraries

* fix name

* Interpolate x points instead of using source x points

* clean up ui and add feature toggle

* fix merge error

* change to loop for finding min max, rename resolution

* Add docs

* add docs and tests

* change name to regression analysis

* update docs

* Fix editor labels

* add regression images

* fix docs

packages/grafana-data/src/transformations/transformers/ids.ts

@@ -39,4 +39,5 @@ export enum DataTransformerID {
   timeSeriesTable = 'timeSeriesTable',
   formatTime = 'formatTime',
   formatString = 'formatString',
+  regression = 'regression',
 }

packages/grafana-data/src/types/featureToggles.gen.ts

@@ -164,4 +164,5 @@ export interface FeatureToggles {
   alertingSimplifiedRouting?: boolean;
   logRowsPopoverMenu?: boolean;
   pluginsSkipHostEnvVars?: boolean;
+  regressionTransformation?: boolean;
 }