Reduce Linux and Windows binaries size

[Luni-4]

It would be helpful to try to reduce the binaries size produced by Rust for each platform. In the CI there are still tasks that could allow these improvements, like the package_windows_binary one, that could be used to install additional software in a simpler way

Useful links for Linux:

https://github.com/johnthagen/min-sized-rust

Useful links for Windows

https://www.codeslow.com/2019/12/tiny-windows-executable-in-rust.html

https://github.com/mcountryman/min-sized-rust-windows

Another useful alternative, both for Linux and Windows, could be splitting debug symbols in separate files, but currently this possibility is blocked in rust-lang/rust#72110

Alternative that makes use of external binaries both for Linux and Windows: http://www.sourceware.org/gdb/onlinedocs/gdb/Separate-Debug-Files.html

[marco-c]

I don't think we'll want to split debug symbols in separate files, it makes things harder to handle for little benefit. It's useful for a generic customer facing software like Firefox, but it doesn't make much sense for us.