Move LoadHooks from Blueprint and run them during ParseBlueprintsFiles.
This will allow them to add scoped module types that are visible to the
rest of the Blueprints file. Requires passing the config object to
ParseBlueprintsFiles.
Test: all blueprint tests
Change-Id: Ia2a2c9a0223d5458bfd48bd22ebed0fdbd0156c6
Blueprint is a meta-build system that reads in Blueprints files that describe
modules that need to be built, and produces a
Ninja manifest describing the commands that
need to be run and their dependencies. Where most build systems use built-in
rules or a domain-specific language to describe the logic for converting module
descriptions to build rules, Blueprint delegates this to per-project build
logic written in Go. For large, heterogenous projects this allows the inherent
complexity of the build logic to be maintained in a high-level language, while
still allowing simple changes to individual modules by modifying easy to
understand Blueprints files.