build: use Kotlin DSL

boot/build.gradle.kts

@@ -0,0 +1,48 @@
+plugins {
+    id("java")
+    id("org.springframework.boot") version "3.5.0"
+    id("io.spring.dependency-management") version "1.1.7"
+}
+
+group = "io.github.reajason"
+version = rootProject.version
+
+java {
+    toolchain {
+        languageVersion = JavaLanguageVersion.of(17)
+    }
+}
+
+tasks.processResources { filesMatching("**/application.yaml") { expand(project.properties) } }
+
+configurations {
+    compileOnly {
+        extendsFrom(configurations.annotationProcessor.get())
+    }
+}
+
+dependencies {
+    implementation(project(":generator")) {
+        exclude(group = "org.apache.tomcat", module = "tomcat-catalina")
+        exclude(group = "commons-logging", module = "commons-logging")
+    }
+    implementation(project(":deserialize")) {
+        exclude(group = "commons-logging", module = "commons-logging")
+    }
+    implementation("org.springframework.boot:spring-boot-starter-thymeleaf")
+    implementation("org.springframework.boot:spring-boot-starter-web") {
+        exclude(group = "org.springframework.boot", module = "spring-boot-starter-tomcat")
+    }
+    implementation("org.apache.commons:commons-lang3:3.17.0")
+    implementation("org.springframework.boot:spring-boot-starter-jetty")
+    compileOnly("org.projectlombok:lombok")
+    developmentOnly("org.springframework.boot:spring-boot-devtools")
+    annotationProcessor("org.springframework.boot:spring-boot-configuration-processor")
+    annotationProcessor("org.projectlombok:lombok")
+    testImplementation("org.springframework.boot:spring-boot-starter-test")
+    testRuntimeOnly("org.junit.platform:junit-platform-launcher")
+}
+
+tasks.test {
+    useJUnitPlatform()
+}