Build an Uberjar with the Project Manager and the Language Server

[lolczak]

Summary

Build an uber jar with the project-manager and the language server.

Value

The IDE team will be able to run the Project Manager.

Specification

• The language runtime should be included through truffle.class.path.append rather than the standard classpath. Research ways of doing that before implementing the functionality.
• One such way (admittedly, not very friendly deployment-wise) would be to build the runtime fatjar separately and then attach it from the project manager's launcher script.
• Implement compilation of the project manager to the uberjar.

Acceptance Criteria & Test Cases

• Please remember about customized classpath for the Languge Server.
• Update the engine pipeline (in the build workflow) to build and publish the artifact.