- ResourceType is now an interface and no an abstract class

    - removed unnecessary lib .jars
    - changed package structure
    - moved enumerations in separate package
    - added MultiType resource to handle content types in a resource
    - moved as much fields as possible to private
    - replaced TimeoutHashMap.java by the new version
    - updated maven build configuration

    - added pom.xml with dependencies
    - removed external jar files
    - moved test classes into separate folder
    - created gradle build for java and OSGI