Build workspace action can report progress to client

[jdneo]

Change computeAsync to computeAsyncWithClientProgress when executing build workspace.

Given the building task may take some time to execute, this could make the client print the trace if the server trace is turned on.

Also fix a type reference in JavaDoc

[fbricon]

I'm not seeing any more progress report with this change

[jdneo]

If config the setting java.trace.server to verbose, more progress can be seen in the output channel, for example:

[Trace - 10:15:08 AM] Received notification 'language/progressReport'.
Params: {
    "task": "Background task",
    "subTask": "(Found 11 warnings) Compiling spring-petclinic/src/test/java/org/springframework/samples/petclinic/model",
    "status": "87% (Found 11 warnings) Compiling spring-petclinic/src/test/java/org/springframework/samples/petclinic/model",
    "totalWork": 1000,
    "workDone": 868,
    "complete": false
}

[fbricon]

test this please

[fbricon]

I see. I was expecting to see new progress reports in the Java Build Status view in VS Code. Maybe something to improve then