integration of java backend

ragconnect.base/src/main/jastadd/Configuration.jadd

...onnect.base/src/main/jastadd/intermediate/Generation.jadd

...in/jastadd/intermediate2mustache/MustacheNodesToYAML.jrag

...c/main/java/org/jastadd/ragconnect/compiler/Compiler.java

ragconnect.base/src/main/resources/JavaHandler.jadd

...onnect.base/src/main/resources/receiveDefinition.mustache

ragconnect.base/src/main/resources/sendDefinition.mustache