Convert `with-absolute-imports` example to TypeScript (#42529)
Converted example to TypeScript to match Contribution docs.
- ~~Renamed `with-absolute-imports` example to
`absolute-imports-and-aliases` to match Contribution docs~~
- ~~Replaced deprecated example with a `README.md` file~~
- Used module path aliases in example, to help developers decide which
import strategy to use
## Documentation / Examples
- [X] Make sure the linting passes by running `pnpm build && pnpm lint`
- [X] The "examples guidelines" are followed from [our contributing
doc](https://github.com/vercel/next.js/blob/canary/contributing/examples/adding-examples.md)
Co-authored-by: JJ Kasper <jj@jjsweb.site>
