Build dependencies #28
Description
Currently build scripts have access to all of the runtime dependencies of a package, which isn't a problem, but being able to specify purely build dependencies and separating from regular/dev dependencies would be ideal.
I thought of this as I work on arisu-vulkan which currently does a bit of build time preprocessing at the moment, to create a dedicated bindgen equivalent for lpm to avoid the split between LuaLS typings and LuaJIT ffi declarations.