Better error message on invalid `@derive Jason.Encoder` options

### Current behavior

When passing an invalid option, eg: 
```ex
@derive {Jason.Encoder, invalid: [:__meta__]}
```

It returns the following error: `cannot encode metadata from the :__meta__ field for CrosswordsApi.Users.User to JSON.`

### Expected behavior 

Could the error be explicit that `expect` or `only` should be passed as valid options only?