Add basic version of post show page

app/javascript/containers/Post.tsx

@@ -0,0 +1,27 @@
+import { connect } from 'react-redux';
+
+import { requestPost } from '../actions/requestPost';
+import { changePostStatus } from '../actions/changePostStatus';
+
+import { State } from '../reducers/rootReducer';
+
+import PostP from '../components/Post/PostP';
+
+const mapStateToProps = (state: State) => ({
+  post: state.currentPost,
+});
+
+const mapDispatchToProps = (dispatch) => ({
+  requestPost(postId: number) {
+    dispatch(requestPost(postId));
+  },
+
+  changePostStatus(postId: number, newPostStatusId: number, authenticityToken: string) {
+    dispatch(changePostStatus(postId, newPostStatusId, authenticityToken));
+  },
+});
+
+export default connect(
+  mapStateToProps,
+  mapDispatchToProps,
+)(PostP);