Support `dependsOn` programmatically in the vscode.Task API

<!-- ⚠️⚠️ Do Not Delete This! feature_request_template ⚠️⚠️ --> <!-- Please read our Rules of Conduct: https://opensource.microsoft.com/codeofconduct/ --> <!-- Please search existing issues to avoid creating duplicates. --> <!-- Describe the feature you'd like. --> When defining a task programmatically via the `new vscode.Task()` API, I would like to be able to set the `dependsOn` and `dependsOrder` configurations. Here's an example some tasks in a tasks.json that I'd like to be able to generate programmatically: ``` { "version": "2.0.0", "tasks": [ { "type": "workload", "action": "apply", "args": ["-f", "config/java.yaml", "--yes"], "problemMatcher": [], "label": "applyWorkload" }, { "type": "workload", "action": "connect", "args": ["9005"], "problemMatcher": ["$portForward"], "label": "portForward", "dependsOn": ["applyWorkload", "someOtherTask"], "dependsOrder": "sequence", "isBackground": true } ] } ```