chore: ライブラリを公開できるように

build.gradle.kts

@@ -1,10 +1,10 @@
 plugins {
     kotlin("jvm") version "1.9.0"
-    application
+    id("maven-publish")
 }
 
 group = "dev.usbharu"
-version = "1.0-SNAPSHOT"
+version = "1.0.0"
 
 repositories {
     mavenCentral()
@@ -23,6 +23,16 @@ kotlin {
     jvmToolchain(11)
 }
 
-application {
-    mainClass.set("MainKt")
+
+publishing{
+    repositories{
+        maven{
+            name = "GitHubPackages"
+            url = uri("https://maven.pkg.github.com/usbharu/http-signature")
+            credentials {
+                username = project.findProperty("gpr.user") as String? ?: System.getenv("USERNAME")
+                password = project.findProperty("gpr.key") as String? ?: System.getenv("TOKEN")
+            }
+        }
+    }
 }

src/main/kotlin/Main.kt

@@ -1,7 +0,0 @@
-fun main(args: Array<String>) {
-    println("Hello World!")
-
-    // Try adding program arguments via Run/Debug configuration.
-    // Learn more about running applications: https://www.jetbrains.com/help/idea/running-applications.html.
-    println("Program arguments: ${args.joinToString()}")
-}