Prior to this change, there was simply a single hardcoded list of doctypes
with accounting dimensions in ERPNext. However, when extending the
capabilities of ERPNext using an add-on app rather than by modifying
ERPNext itself, it may well be necessary to create new doctypes in other
apps that will have accounting dimensions as well.
So, this PR moves the list of doctypes with accounting dimensions into
hooks.py so it can be accumulated from multiple apps. It also allows the
list of doctypes in make_dimension_in_accounting_doctypes be specifiable,
for more convenient use in the after_install hooks of other apps.