feat: Initialize order-service project with Spring Boot and Gradle

build.gradle

@@ -0,0 +1,46 @@
+plugins {
+    id 'java'
+    id 'org.springframework.boot' version '4.0.3'
+    id 'io.spring.dependency-management' version '1.1.7'
+}
+
+group = 'com.example'
+version = '0.0.1-SNAPSHOT'
+description = 'order-service'
+
+java {
+    toolchain {
+        languageVersion = JavaLanguageVersion.of(25)
+    }
+}
+
+configurations {
+    compileOnly {
+        extendsFrom annotationProcessor
+    }
+}
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
+    implementation 'org.springframework.boot:spring-boot-starter-flyway'
+    implementation 'org.springframework.boot:spring-boot-starter-validation'
+    implementation 'org.springframework.boot:spring-boot-starter-webmvc'
+    implementation 'org.flywaydb:flyway-database-postgresql'
+    compileOnly 'org.projectlombok:lombok'
+    developmentOnly 'org.springframework.boot:spring-boot-devtools'
+    runtimeOnly 'org.postgresql:postgresql'
+    annotationProcessor 'org.projectlombok:lombok'
+    testImplementation 'org.springframework.boot:spring-boot-starter-data-jpa-test'
+    testImplementation 'org.springframework.boot:spring-boot-starter-flyway-test'
+    testImplementation 'org.springframework.boot:spring-boot-starter-validation-test'
+    testImplementation 'org.springframework.boot:spring-boot-starter-webmvc-test'
+    testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
+}
+
+tasks.named('test') {
+    useJUnitPlatform()
+}