## Description
This PR ensures that the default prettier config is used for examples
and templates.
This config is compatible with `prettier@3` as well (upgrading prettier
is bigger change that can be a future PR).
## Changes
- Updated `.prettierrc.json` in root with `"trailingComma": "es5"` (will
be needed upgrading to prettier@3)
- Added `examples/.prettierrc.json` with default config (this will
change every example)
- Added `packages/create-next-app/templates/.prettierrc.json` with
default config (this will change every template)
## Related
- Fixes#54402
- Closes#54409
Updates all CMS updates to use:
- Tailwind 3 (and the corresponding `tailwind.config.js` and PostCSS changes)
- `remark@14` and `remark-html@15` (and the corresponding ESM breaking changes)
- `date-fns` minor bump
Ensured all CMS examples were:
- Using `next/image`
- Not using `as` for `next/link` (no longer needed)
[ch2502]
- Added new import flow to every CMS example, using the deploy button, and removed `vercel.json`
- Replaced `dotenv` with the new env support in outdated examples
