minimized the binary size

[rbomze]

This commit enables various compile options to reduce the binary file size to fit on hardware with smaller filesystems. See the recommendations of https://github.com/johnthagen/min-sized-rust Applying reduces the binary size of the rayhunter_daemon by ~60%. (11619420 bytes -> 4614596 bytes). Please verify if the optimizations still produce a working binary on actual hardware.