CapsisBridge javaserver

Renamed CapsisBridgeClient to AbstractCapsisBridgeClient
Added blockSize to sendData methods
Changed enums into protobuf definitions to string

Added DIRECT mode to client to allow measuring performance without GRPC stub
Added SendDataBin method to test sending data using protobuf.Any type directly in binary format.

Added Interceptor which adds the "remote-attr" attribute to the context before calling the RPC method.
Added AllocateNewScript() method to be called by the Interceptor
Added ClientId extraction in each RPC Method and selects the correct ArtScript to invoke into ArtScriptMap
Added ClientId to the server log traces

Added first test implementations

Added skeleton working test shells
Moved ArtScript initialization in server class to common constructor (server & tests)

Corrected wrong variable name

Added CapsisBridgeClient back to output installDist
Added freeAndReportMemory() into server and client code

Moved to ShadowJar plugin for executable jar generation
Added capsispath parameter for build customization
Corrected classpath generation into manifest file

Removed now unused reference to j4r package
Fixed classpath for runtime specification of capsis classes and jars

Minor refactoring