Implement async event tasks.

Events will now only be handled by an async executor if necessary. This should improve performance for lightweight listeners.

proxy/build.gradle

@@ -69,7 +69,6 @@ dependencies {
     runtimeOnly 'com.lmax:disruptor:3.4.2' // Async loggers
 
     implementation 'it.unimi.dsi:fastutil:8.4.1'
-    implementation 'net.kyori:event-method-asm:4.0.0-SNAPSHOT'
     implementation 'net.kyori:adventure-nbt:4.0.0-SNAPSHOT'
 
     implementation 'org.asynchttpclient:async-http-client:2.12.1'
@@ -78,6 +77,8 @@ dependencies {
 
     implementation 'com.electronwill.night-config:toml:3.6.3'
 
+    implementation 'org.lanternpowered:lmbda:2.0.0-SNAPSHOT'
+
     compileOnly 'com.github.spotbugs:spotbugs-annotations:4.1.2'
 
     testImplementation "org.junit.jupiter:junit-jupiter-api:${junitVersion}"
@@ -129,3 +130,7 @@ shadowJar {
 artifacts {
     archives shadowJar
 }
+
+test {
+    useJUnitPlatform()
+}