Refactor/new menu item (#1448)

* wip

* finished

* Added disabled

* Fixed disabled

* Finished cleaning

* Minor fixes from merge

* Added docs

* Added PascalCase

* Fix from review

* Fixes from merge

* Fix lint

* Fixed storybook tests

front/src/modules/pipeline/hooks/usePipelineStages.ts

@@ -22,7 +22,7 @@ export const usePipelineStages = () => {
     return createPipelineStageMutation({
       variables: {
         data: {
-          color: boardColumn.colorCode,
+          color: boardColumn.colorCode ?? 'gray',
           id: boardColumn.id,
           index: boardColumn.index,
           name: boardColumn.title,