[NextJS] GraphQL Request Client + GraphQL Sitemap Service

[sc-illiakovalenko]

Description

Generates a sitemap using Graphql queries

Motivation

How Has This Been Tested?

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update (non-breaking change; modified files are limited to the /docs directory)

Checklist:

• I have read the Contributing guide.
• My code follows the code style of this project.
• My code/comments/docs fully adhere to the Code of Conduct.
• My change is a code change and it requires an update to the documentation.
• My change is a documentation change and it requires an update to the navigation.

[nickwesselman]

Guessing it's a separate backlog item but will there be an ability to swap out the sitemap service for Disconnected mode, e.g. to use the manifest to get route paths?

[sc-illiakovalenko]

Guessing it's a separate backlog item but will there be an ability to swap out the sitemap service for Disconnected mode, e.g. to use the manifest to get route paths?

I'm not sure how it will be implemented for disconnected mode, but may be we can define separate method for disconnected mode, or create a separate service (may be it's better), it can be replaced in getStaticPaths

[ambrauer]

Approved, with some suggested doc/comment changes