Support prettier-plugin-tailwindcss

[Umbrien]

Describe the bug Currently, to make prettier-plugin-tailwindcss work, you need to do some workarond with top-level npm init like @Zeko369 suggested in Discord:

1. run npm init at the root of your project
2. npm install --dev prettier prettier-plugin-tailwindcss
3. make a top level .prettierrc.cjs
4. add this

   module.exports = {
   // ... rest of your config
   plugins: [
   "prettier-plugin-tailwindcss",
   ],
   };

   Expected behavior Wasp deps should ideally only go into your .wasp file.

[Martinsos]

Thanks for this issue @Umbrien ! Hopefully this should be soon solved by the restructuring that we are working on (#734), together with some other stuff, so I would wait till we have that done, and if it still remains an issue then we tackle it separately.