Build tsgo with debug tasks when launching extension locally (#997)

Author: jakebailey

.vscode/tasks.json

@@ -17,7 +17,7 @@
         {
             "label": "Watch",
             "type": "npm",
-            "script": "build:watch",
+            "script": "build:watch:debug",
             "group": "build",
             "presentation": {
                 "panel": "dedicated",

package.json

@@ -22,6 +22,7 @@
         "postinstall": "hereby postinstall",
         "build": "hereby build",
         "build:watch": "hereby build:watch",
+        "build:watch:debug": "hereby build:watch --debug",
         "test": "hereby test",
         "api:build": "npm run -w @typescript/api build",
         "extension:build": "npm run -w _extension build",