<add> implement path and wrapper

<update>

<add> implement PathBuf wrapper

<update> refactor

<update> unified encapsulation of read and write calls

<add> use handles instead of COpaquePointer

<update>

<update> separate ffi bridge part into separate library

<optimize> stdio common fun

<add> stdio implement

<add> rio ffi interface

<add> rio ffi interface

<create> kio scaffold

Initial commit