Add Simple XML Sitemap defaults for content types, menu and vocabulary

Problem/Motivation

These content types are not included in the Simple XML Sitemap by default: Basic page, News item, Case study, Person profile, Project. The taxonomy terms from the Tags vocabulary are not included as well. And also the Main navigation, which includes views like news, etc, is not included. We should add these. For more information see the parent issue: 📌 Enable at least some entities in Simple XML Sitemap by default Active

Steps to reproduce

Install Drupal CMS with SEO tools recipe
Visit sitemap on /sitemap.xml to see that it is empty (only frontpage is here)
Visit sitemap config on /admin/config/search/simplesitemap/entities to see that nothing is included by default

Proposed resolution

Add missing content types Basic page, News item, Case study, Person profile, Project to be included in the sitemap by default.
Add Tags (from Taxonomy term) to be included in the sitemap by default.
Add Main navigation (from Custom menu link) to be included in the sitemap by default.

Remaining tasks

User interface changes

API changes

Data model changes