Type definition doesnt have "options"

[Bre77]

https://github.com/fastify/fastify-leveldb/blob/7a6c5c9e3501bf741c8fac51c0997fe6292cca05/types/index.d.ts#L15-L18

The documentation and tests refer to the options key that users can use to change the store or valueEncoding, but these are not referenced in the type namespace, which results in Typescript errors.