add solid-start routes command

[nirtamir2]

This PR creates routes command in solid-start cli.
This is similar to remix cli route --json command.
https://github.com/remix-run/remix/blob/main/packages/remix-dev/cli/run.ts#LL26C8-L26C8

It allows you to see the generated page routes.

In an example run of solid-start routes of some solid-start project with simple routes, The printed result can be

[
  {
    id: '/index',
    path: '/',
    componentPath: 'src/routes/index.tsx',
    dataPath: 'src/routes/index.tsx?data'
  },
  { id: '/test', path: '/test', componentPath: 'src/routes/test.tsx' },
  {
    id: '/api/something/(other)',
    path: '/api/something',
    componentPath: 'src/routes/api/something/(other).tsx'
  },
  {
    id: '/api/something/[id]',
    path: '/api/something/:id',
    componentPath: 'src/routes/api/something/[id].tsx'
  }
]

NOTICE:

I'm not sure it's useful.
I created a PR because it may be useful and I wanted it in order to create a plugin for routes-gen
to create type-safe page routes (without manually cloning solid-start page regexes).

See sandulat/routes-gen#29
Also - see #588

TODO

• Edit docs with this command (if approved)