Pull'd develop branch

* Bump JDA version to 324 (#31)

Updates JDA (they forgot something with slash-commands, has been added now)

* Add spotless integration

This hopefully makes formatting more consistent. The Eclipse XML style
was chosen as it is understood by Eclipse, VSC (JDT), Spotless and
mostly by IntelliJ.

* Make gradelew executable

* Add "Remove unused imports" setting to spotless

Co-authored-by: Marko Radosavljević <marko@radosavljevic.dev>

* Remove unused imports to fix diffplug/spotless#834 (#35)

Co-authored-by: I-Al-Istannen <i-al-istannen@users.noreply.github.com>
Co-authored-by: Marko Radosavljević <marko@radosavljevic.dev>
Co-authored-by: Jonas <jnhrd254@gmail.com>

build.gradle

@@ -1,5 +1,6 @@
 plugins {
     id 'java'
+    id "com.diffplug.spotless" version "5.15.0"
 }
 
 group 'org.togetherjava'
@@ -14,7 +15,7 @@ repositories {
 }
 
 dependencies {
-    implementation 'net.dv8tion:JDA:4.3.0_323'
+    implementation 'net.dv8tion:JDA:4.3.0_324'
     implementation 'org.apache.logging.log4j:log4j-api:2.14.1'
     implementation 'org.apache.logging.log4j:log4j-core:2.14.1'
     implementation 'org.apache.logging.log4j:log4j-slf4j18-impl:2.14.1'
@@ -24,4 +25,10 @@ dependencies {
 
 test {
     useJUnitPlatform()
-}
+}
+
+spotless {
+    java {
+        eclipse().configFile('meta/formatting/google-style-eclipse.xml')
+    }
+}