two new tgui commands (for coders) (#81381)

## About The Pull Request

tgui:prettier-fix runs prettier fixes
tgui:eslint-fix runs eslint fixes

## Why It's Good For The Game


![image](https://github.com/tgstation/tgstation/assets/70376633/dadf7047-5fc0-498b-93a5-53d03a706b73)

tgui/package.json

@@ -17,7 +17,9 @@
     "tgui:test": "jest --watch",
     "tgui:test-simple": "CI=true jest --color",
     "tgui:test-ci": "CI=true jest --color --collect-coverage",
-    "tgui:tsc": "tsc"
+    "tgui:tsc": "tsc",
+    "tgui:prettier-fix": "prettier --write .",
+    "tgui:eslint-fix": "eslint --fix packages --ext .js,.cjs,.ts,.tsx"
   },
   "dependencies": {
     "@swc/core": "^1.3.100",