Add tasks.json

Signed-off-by: William Brawner <me@wbrawner.com>

tasks.json

@@ -0,0 +1,38 @@
+{
+    "version": "2.0.0",
+    "tasks": [
+      {
+        "type": "npm",
+        "script": "start",
+        "isBackground": true,
+        "presentation": {
+          "focus": true,
+          "panel": "dedicated"
+        },
+        "group": {
+          "kind": "build",
+          "isDefault": true
+        },
+        "problemMatcher": {
+          "owner": "typescript",
+          "source": "ts",
+          "applyTo": "closedDocuments",
+          "fileLocation": [
+            "relative",
+            "${cwd}"
+          ],
+          "pattern": "$tsc",
+          "background": {
+            "activeOnStart": true,
+            "beginsPattern": {
+              "regexp": "(.*?)"
+            },
+            "endsPattern": {
+              "regexp": "Compiled |Failed to compile."
+            }
+          }
+        }
+      }
+    ]
+  }
+