Revert "Revert "Revert "Add vanilla Bookbinder layout template with pre-content partial call [#169586321]"""
Revert "Revert "Revert "Add vanilla Bookbinder layout template with pre-content partial call [#169586321]"""

This reverts commit 49469a1a3732ea5220cb72dc060df2e485d87602.

cloudfoundry/docs-book-cloudfoundry,cloudfoundry/docs-book-cloudfoundry,swisscom/docs-appcloud-book,swisscom/docs-appcloud-book,cloudfoundry/docs-book-cloudfoundry,swisscom/docs-appcloud-book,cloudfoundry/docs-book-cloudfoundry,swisscom/docs-appcloud-book