create action, reducer, effect and selector for fetching bars

src/app/components/bars/bars.component.html

src/app/components/bars/bars.component.ts

src/app/photos/shared/store/photos.reducers.ts

src/app/photos/shared/store/photos.selectors.ts

src/app/share/models/bar.model.ts

src/app/share/services/bars.service.ts

src/app/share/store/actions/bars.actions.ts

src/app/share/store/effects/bars.effects.ts

src/app/share/store/index.ts

src/app/share/store/reducers/bars.reducers.ts

src/app/share/store/selectors/bars.selectors.ts