Build archive files for packages

[raviqqe]

Description

Close #231

Technical decisions

Circular dependency between main packages and system packages

Options

• Call _pen_main directly from a system package's main objects.
• Use --whole-archive option on linking.
  • When system packages are written in Rust, this is a little hacky as it's not explicitly supported yet.
  • https://doc.rust-lang.org/cargo/reference/build-scripts.html
  • Explicit support for whole-archive linker option rust-lang/cargo#7586
• Specify system packages' archive files twice before and after main packages' on linking.