FEAT: Register server side grpc service

src/main/java/org/caosdb/server/grpc/GRPCServer.java

@@ -141,6 +141,12 @@ public class GRPCServer {
         ServerInterceptors.intercept(
             entityTransactionService, loggingInterceptor, authInterceptor));
 
+    final ServerSideScriptingServiceImpl serverSideScriptingService =
+        new ServerSideScriptingServiceImpl();
+    services.add(
+        ServerInterceptors.intercept(
+            serverSideScriptingService, loggingInterceptor, authInterceptor));
+
     return services;
   }