feat: add board options dropdown and pipeline stage creation (#1399)

* feat: add board options dropdown and pipeline stage creation

Closes #1395

* refactor: code review

- remove useCallback

front/src/modules/pipeline/graphql/mutations/createPipelineStage.ts

@@ -0,0 +1,11 @@
+import { gql } from '@apollo/client';
+
+export const CREATE_PIPELINE_STAGE = gql`
+  mutation CreatePipelineStage($data: PipelineStageCreateInput!) {
+    pipelineStage: createOnePipelineStage(data: $data) {
+      id
+      name
+      color
+    }
+  }
+`;