refactor(logger): remove LoggerUtil and add simplelogger for tests

wrapper/discord4j/build.gradle.kts

@@ -17,6 +17,8 @@ dependencies {
     testImplementation(libs.discord4j)
 
     testRuntimeOnly("org.junit.platform:junit-platform-launcher")
+    testImplementation(libs.slf4j.simple)
+
     implementation(libs.slf4j)
     implementation(libs.discord4j) {
         exclude(module="discord4j-voice")

wrapper/discord4j/src/main/java/net/tomatentum/marinara/wrapper/discord4j/Discord4JRegistererStrategy.java

@@ -10,7 +10,7 @@ import net.tomatentum.marinara.wrapper.CommandRegisterer;
 import net.tomatentum.marinara.wrapper.ServerCommandList;
 
 public class Discord4JRegistererStrategy implements CommandRegisterer.Strategy<ApplicationCommandRequest> {
-    
+
     private ApplicationService appService;
     private long applicationId;
 

wrapper/discord4j/src/test/resources/simplelogger.properties

@@ -0,0 +1,7 @@
+# SLF4J's SimpleLogger configuration file
+# Simple implementation of Logger that sends all enabled log messages, for all defined loggers, to System.err.
+
+# Default logging detail level for all instances of SimpleLogger.
+# Must be one of ("trace", "debug", "info", "warn", or "error").
+# If not specified, defaults to "info".
+org.slf4j.simpleLogger.defaultLogLevel=trace