Rename shadowJar output file to ProxyDiscordLink.jar

Updated the shadowJar configuration to output the JAR file as ProxyDiscordLink.jar instead of discordLink.jar. This change clarifies the file's purpose and aligns with naming conventions.

build.gradle.kts

@@ -63,7 +63,7 @@ dependencies {
 
         shadowJar {
 
-            archiveFileName.set("discordLink.jar")
+            archiveFileName.set("ProxyDiscordLink.jar")
             listOf(
                 "net.dv8tion.jda"
             ).forEach { relocate(it, "${rootProject.group}.lib.$it") }