makefile complexity does not respect go modules

[n3wscott]

The build scripts do not work if building a go module with an implicit path like modul github.com/crossplane-contrib/provider-nop/v2

The projects are expected to set PROJECT_REPO := github.com/crossplane-contrib/$(PROJECT_NAME)

The build system expects GO_PACKAGES := $(foreach t,$(GO_SUBDIRS),$(GO_PROJECT)/$(t)/...)

but this fails to account for modules != file paths when not on v0 or v1.