Adds optional concrete interfaces that can be added to implementations of XBrowseNode to create, delete, edit or rename nodes. The comphelper abstraction now uses these if the interface is implemented otherwise it will fall back to the old method using XPropertySet and XInvocation so that existing script providers will continue to work. The goal is to avoid using XInvocation for duck-typed methods because that breaks pyuno. It is also easier to implement the optional interfaces than to use the previous approach. Change-Id: Id59136152941fd232673ec4b9082a0be0cb6ca8d Reviewed-on: https://gerrit.libreoffice.org/c/core/+/207344 Reviewed-by: Neil Roberts <nroberts@libreoffice.org> Tested-by: Jenkins