message: Fix launch.json to account for package structure changes
diff: {
  "type": "node",
  "request": "launch",
  - "name": "Run Tests",
  + "name": "Run Backend Tests",
  "program": "${workspaceFolder}/node_modules/@bentley/bentleyjs-tools/scripts/test",
  - "cwd": "${workspaceFolder}",
  + "cwd": "${workspaceFolder}/source/backend",
  "args": [
  "--packageRoot=${workspaceFolder}",
  - "--testDir=${workspaceFolder}/source/backend/lib/backend/test",
  + "--testDir=${workspaceFolder}/source/backend/lib/test",
  "--debug"
  ],
  "port": 9229,
  "runtimeExecutable": "${workspaceFolder}\\source\\testbed\\node_modules\\.bin\\electron",
  "runtimeArgs": [
  "${workspaceFolder}/source/testbed/floss/electron/index.js",
  - "{\"debug\":true, \"noDevTools\":true, \"path\":\"lib/testbed/frontend/index.js\", \"grep\":\"\", \"fgrep\":\"\"}",
  + "{\"debug\":true, \"noDevTools\":true, \"path\":\"lib/frontend/index.js\", \"grep\":\"\", \"fgrep\":\"\"}",
  "--debug-brk=5858",
  "--remote-debugging-port=9223"
  ],
  