chore: serve local dist (#5021)

# What this PR does
provide command to serve local dist folder without running local Grafana


## Checklist

- [ ] Unit, integration, and e2e (if applicable) tests updated
- [x] Documentation added (or `pr:no public docs` PR label added if not
required)
- [x] Added the relevant release notes label (see labels prefixed w/
`release:`). These labels dictate how your PR will
    show up in the autogenerated release notes.

.tilt/plugin/Tiltfile

@@ -21,7 +21,7 @@ if not is_ci:
  dir=grafana_plugin_dir,
  cmd="pnpm install",
  serve_dir=grafana_plugin_dir,
- serve_cmd="pnpm watch",
+ serve_cmd="pnpm dev",
  allow_parallel=True,
  )
 

grafana-plugin/package.json

@@ -27,7 +27,9 @@
  "test:e2e:gen": "pnpm playwright codegen http://localhost:3000",
  "e2e-show-report": "pnpm playwright show-report --port 31000",
  "generate-types": "cd ./src/network/oncall-api/types-generator && pnpm generate",
- "watch": "NODE_ENV=development webpack -w -c ./webpack.config.ts --env development",
+ "dev": "NODE_ENV=development webpack -w -c ./webpack.config.ts --env development",
+ "serve": "serve -p 3001 ./dist",
+ "dev:serve": "concurrently --names \"serve,dev\" --prefix-colors \"blue,green\" \"pnpm serve\" \"pnpm dev\"",
  "sign": "npx --yes @grafana/sign-plugin@latest",
  "start": "pnpm watch",
  "setversion": "setversion",
@@ -114,6 +116,7 @@
  "sass": "1.63.2",
  "sass-loader": "13.3.1",
  "semver": "^7.6.0",
+ "serve": "^14.2.3",
  "style-loader": "3.3.3",
  "stylelint-config-prettier": "^9.0.3",
  "stylelint-prettier": "^2.0.0",