Add the following to your mod's build.gradle.kts file:

repositories {
    mavenCentral()
}

dependencies {
    // ...
    
    modImplementation("de.hglabor:notify:1.1.3")
}

Then put the built jar file of notify into your mods folder. You should be able to subscribe to the events like this:

// (On the server)
subscribeToEvent<PlayerJoinEvent> {
    logger.info("Player ${it.player.name.string} joined")
}

• PlayerAttackEntityEvent
• PlayerHungerChangeEvent
• PlayerItemPickupEvent
• PlayerPlaceBlockEvent
• PlayerSlotClickEvent

• PlayerBreakBlockEvent
• PlayerDeathEvent
• PlayerInteractItemEvent
• PlayerInteractBlockEvent
• PlayerItemDropEvent: called when a player attempts to drop an item
• PlayerItemDroppedEvent: called after an item was dropped
• PrePlayerJoinEvent: called before a player joins the server
• PlayerJoinEvent: called when a player joins the server. Allows modification of the join message
• PostPlayerJoinEvent: called after a player joins the server
• PlayerRemoveEvent: called after a player got removed from the player list
• PlayerQuitEvent: called when a player quits the server. Allows modification of the quit message
• PlayerSwapHandItemsEvent
• PlayerTickEvent
• PlayerSetSettingsEvent: called e.g. when player changes client language
• EntitySpawnEvent
• ProjectileHitEvent: called when a projectile hits another entity