[FEATURE] Support `servers` annotation options

### Description

Hi Colleagues,

we have an issue: https://github.com/cap-js/ord/issues/338. At the moment, openapi supports two terms: externalDocs and Extensions, is possible to support `servers` officially from cds annotation as well? 

Best,
Zongqi

### Suggested Solution

Support servers annotation

### Alternatives

_No response_

### Additional Context

_No response_