Store action typings in YAMLs

[krzema12]

Currently the typings are stored in https://github.com/krzema12/github-actions-kotlin-dsl/blob/main/wrapper-generator/src/main/kotlin/it/krzeminski/githubactions/wrappergenerator/WrappersToGenerate.kt

Instead, they could be stored in YAML files, according to this standard: https://github.com/krzema12/github-actions-typing

It would allow us to have the same format in both places - this library and the actions. I can even imagine some typing assistant, an application that would take an action as input, would help choose the right typings, and would finally send PRs both to this library and the action repo.