These alias the standard library unique_ptr and shared_ptr
riscv: Use Unique in many places
Uses lucore::Unique. This should hopefully help memory management somewhat.
lcpu: Use Unique
riscv::System::Create now creates a Unique
so does lucore::Library::OpenExisting
This commit adds `projgen`, a very simplistic project generator.
Some knobs to the build system were added to ensure that only the
needed parts will build with each end (building the GMod module won't build projgen
since that isn't needed on the host)
The fun part will be figuring out how to jail things properly