feat: Add reducer to redux ecosystem

src/redux/ecosystem/reducer.tsx

+import { AnyAction } from "redux";
+import { ICategory } from "../../types/firestore";
+
+const initialState: ICategory[] = [];
+
+const ecosystemReducer = (
+  state = initialState,
+  action: AnyAction
+): ICategory[] => {
+  switch (action.type) {
+    case "CATEGORIES": {
+      const payload = action.payload as { categories: ICategory[] };
+      return { ...state, cateories: payload.categories } as ICategory[];
+    }
+    default:
+      return state;
+  }
+};
+
+export default ecosystemReducer;

src/redux/store.tsx

 import { configureStore } from "@reduxjs/toolkit";
 
 import userReducer from "./user/reducer";
+import ecosystemReducer from "./ecosystem/reducer";
 import thunk from "redux-thunk";
 
 // const rootReducer = combineReducers({
@@ -12,6 +13,7 @@ import thunk from "redux-thunk";
 const store = configureStore({
   reducer: {
     user: userReducer,
+    ecosystem: ecosystemReducer,
   },
   middleware: [thunk],
 });