Adding Subject Alternative Names support to CSR generation

# QwikContext
The SecurityCSC does not allow you to specify subject Alternative Names when creating a certificate signing request.

# Details
iDRAC 4.40 introduced the ability to generate a CSR with subject alternative names through the RedFish API. The documentation can be seen [here](https://api-marketplace.dell.com/#/overview-doc/2978/6818/openapi.yaml/paths/~1redfish~1v1~1CertificateService~1Actions~1CertificateService.GenerateCSR/post)

# Repro Steps
Steps to reproduce the problem

# Impact
This would be extending the existing certificate signing request functionality.

# NeedBy
Sooner the better would be nice :)

# Severity
Low

Start by locating the existing CSR-generation entry point and compare its request shape with the linked Dell Redfish GenerateCSR documentation. Confirm the expected subject alternative name inputs and add coverage for generating a CSR containing them; done means this capability works without breaking existing CSR generation.

Written by the indexing model from the issue text.