Add RFD 183: Access Request Kube Resource Allow List (#46691)

* Add RFD 183: Access Request Kube Resource Allow List

* Change request option design

* Move field to options and use list to store values

* Re-use existing data structure for request mode

* Change defining modes in options field to role condition request field

* Update RFD with updated fields and web UI error handling

* Final RFD tweaks and mark it implemented