fix: allow multiple type as nullable

bump: version

ref: migrate to bun

fix: handle additionalProperties

fix: handle array without items type

fix: handle non 200 responses

fix: handle missing types

ci: workflow name

test: openapiv30 new baseline

ci: test workflow

fix: multipart/form-data request body

bump: 0.1.9

fix: add shebang in the entry point of the library

doc: version in README.md

fix: oneOf support