Added user redux for updating profile/credentials

• Added:
- user redux for updating profile/credentials

app/javascript/gabsocial/reducers/user.js

@@ -0,0 +1,24 @@
+import {
+  SAVE_USER_PROFILE_INFORMATION_FETCH_REQUEST,
+  SAVE_USER_PROFILE_INFORMATION_FETCH_SUCCESS,
+  SAVE_USER_PROFILE_INFORMATION_FETCH_FAIL,
+} from '../actions/user'
+import { Map as ImmutableMap } from 'immutable'
+
+const initialState = ImmutableMap({
+  isLoading: false,
+  isError: false,
+})
+
+export default function (state = initialState, action) {
+  switch (action.type) {
+    case SAVE_USER_PROFILE_INFORMATION_FETCH_REQUEST:
+      return state.set('isLoading', true)
+    case SAVE_USER_PROFILE_INFORMATION_FETCH_SUCCESS:
+      return state
+    case SAVE_USER_PROFILE_INFORMATION_FETCH_FAIL:
+      return state.set('isError', true)
+    default:
+      return state
+  }
+}