Generate Spring Boot configuration metadata file

Closes gh-12

build.gradle

@@ -53,6 +53,9 @@ dependencies {
 	compileOnly "org.graceframework:grace-boot"
 	compileOnly "jakarta.servlet:jakarta.servlet-api:$servletApiVersion"
 
+    api "org.springframework.boot:spring-boot-autoconfigure"
+    annotationProcessor "org.springframework.boot:spring-boot-autoconfigure-processor"
+    annotationProcessor "org.springframework.boot:spring-boot-configuration-processor"
     documentation "org.fusesource.jansi:jansi:$jansiVersion"
 	documentation "com.github.javaparser:javaparser-core:$javaParserCoreVersion"
 
@@ -89,6 +92,10 @@ test {
     useJUnitPlatform()
 }
 
+tasks.named('compileJava') {
+    inputs.files(tasks.named('processResources'))
+}
+
 publishing {
     publications {
         maven(MavenPublication) {

src/main/resources/META-INF/additional-spring-configuration-metadata.json

@@ -0,0 +1,12 @@
+{
+  "groups": [],
+  "properties": [
+    {
+      "name": "grails.plugin.fields.widgetPrefix",
+      "type": "java.lang.String",
+      "description": "The default prefix of attributes.",
+      "defaultValue": "widget-"
+    }
+  ],
+  "hints": []
+}