A try to create panic-safe Golang types and some experiments with the language type system

surdeus fa3fdf8002 feat: better nilable types. hai 7 meses
cmd fa3fdf8002 feat: better nilable types. hai 7 meses
objects b9e40a0963 Init. hai 9 meses
.gitignore fa3fdf8002 feat: better nilable types. hai 7 meses
go.mod b9e40a0963 Init. hai 9 meses
id.go fa3fdf8002 feat: better nilable types. hai 7 meses
interface.go b9e40a0963 Init. hai 9 meses
main.go b9e40a0963 Init. hai 9 meses
mut.go b9e40a0963 Init. hai 9 meses
nil.go fa3fdf8002 feat: better nilable types. hai 7 meses
ptr.go b9e40a0963 Init. hai 9 meses
valid.go fa3fdf8002 feat: better nilable types. hai 7 meses