GH-913 - Package Javadoc for newly introduced packages.

spring-modulith-apt/src/main/java/org/springframework/modulith/apt/package-info.java

@@ -0,0 +1,7 @@
+/**
+ * An annotation processor to extract Javadoc from application code for inclusion in generated architecture
+ * documentation.
+ *
+ * @since 1.3
+ */
+package org.springframework.modulith.apt;