feat(models): setup types and parser with zod

[BioPhoton]

Created package for models.

The package includes:

• types and models for the CLI as well as plugins
• parser for the exported types (written with zod)
• basic validations
• regex for slug, ref, and filePath
• cross field validators for slug and ref
• basic readme
• additionally added
  • PluginsOutput

export const pluginsOutputSchema = z.object(
  {
    date: z.date({description: 'ISO format date of the start of all plugin runs'}),
    duration: z.string({description: 'Duration od all plugin runs in ms'})
  },
  {description: 'JSON formatted output emitted after executing all plugins.'},
);

Tests are added for:

• regex
• string helper
• schema validators
• cross field validators
• custom validators

Precondition for #32 ; closes #30