[FEATURE] @tmpl/args

[90dy]

Is your feature request related to a problem? Please describe.

When generating template, we would like to have custom args like in command line

Describe the solution you'd like

Something like
in template.ts

import { name } from 'jsr:@tmpl/args'

declare module "jsr:@tmpl/args" {
  options: {
    name: string
  }
}

export default json`
{
  "name":  "${name}"
}
`

$> deno run -A jsr:@tmpl/gen --name=test < template.ts
{
  "name": "test"
}