added a very simple Spring Boot Web App prototype

prototype/build.gradle

@@ -0,0 +1,30 @@
+buildscript {
+    repositories {
+        mavenCentral()
+    }
+    dependencies {
+        classpath("org.springframework.boot:spring-boot-gradle-plugin:2.1.10.RELEASE")
+    }
+}
+
+apply plugin: 'java'
+apply plugin: 'idea'
+apply plugin: 'org.springframework.boot'
+apply plugin: 'io.spring.dependency-management'
+
+repositories {
+    mavenCentral()
+}
+
+sourceCompatibility = 1.8
+targetCompatibility = 1.8
+
+dependencies {
+    compile("org.springframework.boot:spring-boot-starter-web")
+    compile("org.springframework.boot:spring-boot-starter-thymeleaf")
+    compile("org.springframework.boot:spring-boot-devtools")
+    testCompile("org.springframework.boot:spring-boot-starter-test")
+}
+
+group 'org.hso'
+version '0.1.0'