refactor(boil)!: Refactor internal code structure #37

Job	Run time
Run cargo-deny (bans licenses sources)	1m 21s
Run cargo-deny (advisories)	42s
Build boil (aarch64-apple-darwin, macos-latest)	59s
Build boil (x86_64-unknown-linux-gnu, ubuntu-latest)	59s
Build boil (aarch64-unknown-linux-gnu, ubuntu-24.04-arm)	1m 5s
	5m 6s

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