A sleep tracking tool

On an original idea from one of my daughters.

Compilation using xbuild

Install using cargo install xbuild.

• Check xbuild dependencies using x doctor
• Use it for android build : x build -r --platform android --arch arm64 --format apk
• Use it for linux build : x build -r

Compilation without libc dependencies

# apt install musl musl-dev musl-tools
$ rustup target add x86_64-unknown-linux-musl
$ cargo build --target x86_64-unknown-linux-musl --release