[REST] To add/enable ephemeral key and NAT 64 functionality in the Swagger REST API

[HarishPRK]

We understand that the current Swagger REST API implementations doesn't have the above requested functionalities. Would appreciate any support regarding the same.

[EskoDijk]

@HarishPRK Just curious, what is the Swagger REST API used for? Haven't used it myself yet. Is it to avoid having to do an SSH session into the Border Router and use the CLI ?