build: 添加 maven 上传配置

build.gradle.kts

@@ -2,6 +2,7 @@
 
 plugins {
     id("java")
+    id("maven-publish")
 }
 
 group = "cn.hamster3.mc.plugin"
@@ -46,3 +47,21 @@ tasks {
         destinationDirectory = rootProject.layout.buildDirectory
     }
 }
+
+publishing {
+    publications {
+        create<MavenPublication>("mavenJava") {
+            from(components["java"])
+        }
+    }
+    repositories {
+        maven {
+            url = uri("https://maven.airgame.net/public/")
+
+            credentials {
+                username = rootProject.properties.getOrDefault("maven_username", "").toString()
+                password = rootProject.properties.getOrDefault("maven_password", "").toString()
+            }
+        }
+    }
+}