switch build system to gradle

build.gradle.kts

@@ -0,0 +1,45 @@
+/*
+ * This file was generated by the Gradle 'init' task.
+ */
+
+plugins {
+    `java-library`
+    `maven-publish`
+    id("io.freefair.lombok") version "9.0.0"
+}
+
+repositories {
+    mavenLocal()
+    mavenCentral()
+    maven {
+        url = uri("https://repo.maven.apache.org/maven2/")
+    }
+}
+
+dependencies {
+    api(libs.org.springframework.boot.spring.boot.starter.websocket)
+    api(libs.org.springframework.boot.spring.boot.starter.data.jpa)
+    api(libs.org.springframework.boot.spring.boot.starter.actuator)
+    runtimeOnly(libs.com.mysql.mysql.connector.j)
+    testImplementation(libs.org.springframework.boot.spring.boot.starter.test)
+    testImplementation(libs.org.springframework.security.spring.security.test)
+}
+
+group = "de.pnreichmuth"
+version = "0.0.1-SNAPSHOT"
+description = "timekeep-backend"
+java.sourceCompatibility = JavaVersion.VERSION_1_8
+
+publishing {
+    publications.create<MavenPublication>("maven") {
+        from(components["java"])
+    }
+}
+
+tasks.withType<JavaCompile>() {
+    options.encoding = "UTF-8"
+}
+
+tasks.withType<Javadoc>() {
+    options.encoding = "UTF-8"
+}