Classic Create Post command

[cadic]

Description of the Change

Adds classicCreatePost command

cy.classicCreatePost({
  title: 'Post title',
  content: 'Post content',
  beforeSave: () => {
    // Do something before save.
  },
  postType: 'page',
  status: 'draft'
}).then(postID => {
  cy.log(postID);
});

Checklist:

• I have read the CONTRIBUTING document.
• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my change.
• All new and existing tests passed.

Changelog Entry

Added - classicCreatePost command

[iamdharmesh]

Thanks for adding this @cadic, Code looks good to me 🚀. just added a minor question and wanted to know your thoughts on it.