Test: Task API to listen to task process creation and ending

[dbaeumer]

• anyOS @chrmarti
• anyOs @isidorn

Complexity: 2

Tests: #49806

API has been added to listen to process creation and termination of tasks. See https://github.com/Microsoft/vscode/blob/master/src/vs/vscode.d.ts#L4974

Write a simple extension that listens to process creation. Ensure that the processId of the TaskProcessStartEvent refers to the task process itself and not to any node pty process. Ensure also that the exitCode of TaskProcessEndEvent returns the correct value.

Code sample

    vscode.tasks.onDidStartTaskProcess(event => {
        console.log(`Process started: ${event.processId}`);
    });
    vscode.tasks.onDidEndTaskProcess(event => {
        console.log(`Process ended: ${event.exitCode}`);
    });