Support for TS Template Literal Types

[j-murata]

It would be very helpful if zod-to-ts could convert .startWith() and .endsWidth() to TypeScript Template Literal Types.

For example:

import { z } from 'zod';
const fileUrlSchema = z.string().startsWith('file://');

↓ ↓ ↓

type FileUrl = `file://${string}`;

[sachinraja]

I think it's possible but we'd also have to add support for all the other helpers that zod has, which could take a bit of time. I'm open to PRs though.