Function for checking if a given Filter matches an Event

[dluvian]

Describe the enhancement

A function that checks if an Event can be queried by a given Filter. Something like Filter::matches(event: &Event) -> Boolean and expose it to the Kotlin bindings. Or at least let Kotlin nostr binding users retrieve the current value of each field of the Filter, so users can implement the matches function themselves. The exposed functions are setters, no getters.

Use case

Clients should always check if the received events are really the ones we queried for. Otherwise malicious or buggy relays could spam the client with unwanted events

Additional context