. update async-openai to 0.18.0

. update dependencies

. Cargo.toml - Remove unnecessary lints.rust

. update ai-buddy-cli to 0.0.3

! update to simple-fs, update ai-buddy to 0.1.0

. minor cleanups

* error refactoring - step 2 - all tight - removed Error::Custom

* error refactoring - step 1 - with Error::Custom

. add ai-buddy-app placeholder (and published to crates.io)

* MAJOR - Refactoring multi-crates

initial