feat: enhance Maven publication configuration with detailed POM metadata

Author: ptthanh02

api/build.gradle.kts

@@ -7,8 +7,28 @@ dependencies {
 publishing {
     publications {
         create<MavenPublication>("mavenJava") {
+            groupId = "github.nighter"
+            artifactId = "smartspawner-api"
             from(components["java"])
-            artifactId = "api"
+
+            pom {
+                name.set("SmartSpawner API")
+                description.set("API for SmartSpawner plugin - allows other plugins to create and manage spawners")
+                url.set("https://github.com/NighterDevelopment/SmartSpawner")
+                licenses {
+                    license {
+                        name.set("MIT License")
+                        url.set("https://opensource.org/licenses/MIT")
+                    }
+                }
+                developers {
+                    developer {
+                        id.set("nighter")
+                        name.set("Nighter")
+                        email.set("notnighter@gmail.com")
+                    }
+                }
+            }
         }
     }
 }