Add separate publishing for Bukkit impl

platforms/bukkit/build.gradle.kts

@@ -9,6 +9,7 @@ import java.nio.file.StandardCopyOption
 
 plugins {
     `java-library`
+    `maven-publish`
 }
 configureCommon()
 
@@ -108,3 +109,27 @@ tasks.named<ShadowJar>("shadowJar") {
     relocate("org.bstats.bukkit", "com.dfsek.terra.lib.bstats")
     relocate("io.papermc.lib", "com.dfsek.terra.lib.paperlib")
 }
+publishing {
+    publications {
+        create<MavenPublication>("mavenJava") {
+            artifact(tasks["sourcesJar"])
+            artifact(tasks["jar"])
+        }
+    }
+
+    repositories {
+        val mavenUrl = "https://repo.codemc.io/repository/maven-releases/"
+        val mavenSnapshotUrl = "https://repo.codemc.io/repository/maven-snapshots/"
+
+        maven(mavenUrl) {
+            val mavenUsername: String? by project
+            val mavenPassword: String? by project
+            if (mavenUsername != null && mavenPassword != null) {
+                credentials {
+                    username = mavenUsername
+                    password = mavenPassword
+                }
+            }
+        }
+    }
+}