Add a tasks.json file with a default build configuration and commands to run tests in parallel

Author: ahoppen

.vscode/tasks.json

@@ -0,0 +1,43 @@
+{
+	"tasks": [
+		{
+			"args": [
+				"test",
+				"--parallel"
+			],
+			"cwd": "",
+			"detail": "swift test --parallel",
+			"disableTaskQueue": true,
+			"group": "test",
+			"label": "Run all tests (parallel)",
+			"problemMatcher": [
+				"$swiftc"
+			],
+			"type": "swift"
+		},
+		{
+			"args": [
+				"test",
+				"--parallel"
+			],
+			"cwd": "",
+			"detail": "SKIP_LONG_TESTS=1 swift test --parallel",
+			"disableTaskQueue": true,
+			"group": {
+				"isDefault": true,
+				"kind": "test"
+			},
+			"label": "Run fast tests (parallel)",
+			"options": {
+				"env": {
+					"SKIP_LONG_TESTS": "1"
+				}
+			},
+			"problemMatcher": [
+				"$swiftc"
+			],
+			"type": "swift"
+		}
+	],
+	"version": "2.0.0"
+}