Function getKeyPackageReference

getKeyPackageReference(event: NostrEvent): string | undefined
Returns the KeyPackageRef (the i tag value, transports/nostr.md) from a kind 30443 KeyPackage event.

Per transports/nostr.md (KeyPackage publication), KeyPackage events MUST include this tag.
Parameters
- event: NostrEvent
Returns string | undefined
- Defined in ../home/runner/work/marmot-ts/marmot-ts/src/core/key-package-event-decode.ts:163