build: enable gradle configuration cache

Author: hauner

gradle.properties

@@ -5,9 +5,10 @@ projectTitle=openapi-processor
 projectDesc=OpenAPI Processor
 projectRepo=openapi-processor/openapi-processor-base
 
-#org.gradle.configuration-cache=true
+org.gradle.configuration-cache=true
 #org.gradle.configuration-cache.parallel=true
 org.gradle.warning.mode=all
+org.gradle.caching=true
 
 org.gradle.jvmargs = -Xmx1g -Xms256m -XX:MaxMetaspaceSize=512m \
   --add-exports jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED \