Refactor adding a new list item from Vuex to Apollo

This issue is a part of &9026 (closed)

We need to refactor adding a new board list from Vuex action to Apollo mutation

Look into replacing project select when adding an issue in a group board: https://gitlab.com/gitlab-org/gitlab/-/blob/master/app/assets/javascripts/vue_shared/components/entity_select/project_select.vue