Modified the `has` method's `path` parameter type from `string` to `P…

…ropertyPath`. This change ensures compatibility with lodash's `has` function and allows for a broader range of path types (e.g., arrays, strings, etc.).

Bugfix

Optimizations & Corrections in README

feat!: Changed generic type default from `never` to `unknown`

This update modifies all functions to use `unknown` as the default generic type instead of `never`. The change provides more flexibility for consumers who do not explicitly specify a generic type.

BREAKING CHANGE: Consumers relying on the previous behavior with `never` may experience different type inference. Ensure your code is compatible before upgrading.