First round of refactor EntityBoards (#1067)

front/src/modules/ui/board/states/boardColumnsState.ts

@@ -0,0 +1,8 @@
+import { atom } from 'recoil';
+
+import { BoardColumnDefinition } from '@/ui/board/types/BoardColumnDefinition';
+
+export const boardColumnsState = atom<BoardColumnDefinition[]>({
+  key: 'boardColumnsState',
+  default: [],
+});