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

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

surdeus fa3fdf8002 feat: better nilable types.		5 сар өмнө
cmd	fa3fdf8002 feat: better nilable types.	5 сар өмнө
objects	b9e40a0963 Init.	7 сар өмнө
.gitignore	fa3fdf8002 feat: better nilable types.	5 сар өмнө
go.mod	b9e40a0963 Init.	7 сар өмнө
id.go	fa3fdf8002 feat: better nilable types.	5 сар өмнө
interface.go	b9e40a0963 Init.	7 сар өмнө
main.go	b9e40a0963 Init.	7 сар өмнө
mut.go	b9e40a0963 Init.	7 сар өмнө
nil.go	fa3fdf8002 feat: better nilable types.	5 сар өмнө
ptr.go	b9e40a0963 Init.	7 сар өмнө
valid.go	fa3fdf8002 feat: better nilable types.	5 сар өмнө