Add startup log messages

Signed-off-by: Graham <gpe@openrs2.org>

game/src/main/kotlin/org/openrs2/game/GameCommand.kt

@@ -1,6 +1,7 @@
 package org.openrs2.game
 
 import com.github.ajalt.clikt.core.CliktCommand
+import com.github.michaelbull.logging.InlineLogger
 import com.google.inject.Guice
 import org.openrs2.inject.CloseableInjector
 
@@ -8,9 +9,16 @@ public fun main(args: Array<String>): Unit = GameCommand().main(args)
 
 public class GameCommand : CliktCommand(name = "game") {
     override fun run() {
+        val start = System.nanoTime()
+        logger.info { "Starting OpenRS2..." }
+
         CloseableInjector(Guice.createInjector(GameModule)).use { injector ->
             val server = injector.getInstance(GameServer::class.java)
-            server.run()
+            server.run(start)
+        }
     }
+
+    private companion object {
+        private val logger = InlineLogger()
     }
 }

game/src/main/kotlin/org/openrs2/game/GameServer.kt

@@ -1,5 +1,6 @@
 package org.openrs2.game
 
+import com.github.michaelbull.logging.InlineLogger
 import com.google.common.util.concurrent.Service
 import com.google.common.util.concurrent.ServiceManager
 import javax.inject.Inject
@@ -11,8 +12,17 @@ public class GameServer @Inject constructor(
 ) {
     private val serviceManager = ServiceManager(services)
 
-    public fun run() {
+    public fun run(start: Long) {
         serviceManager.startAsync().awaitHealthy()
+
+        val elapsed = System.nanoTime() - start
+        logger.info { "Started OpenRS2 in ${elapsed / NANOS_PER_MILLI} milliseconds" }
+
         serviceManager.awaitStopped()
     }
+
+    private companion object {
+        private val logger = InlineLogger()
+        private const val NANOS_PER_MILLI = 1_000_000
+    }
 }