Add options for datetime into zod plugin

[harkor]

Actually, we only have something like this

export const zOrder = z.object({
  complete: z.boolean().optional(),
  id: z.coerce.bigint().optional(),
  petId: z.coerce.bigint().optional(),
  quantity: z.number().int().optional(),
  shipDate: z
    .string()
    .datetime()
    .optional(),
  status: z.enum(['placed', 'approved', 'delivered']).optional(),
});

Tha goal is providing datetime options given by zod documentation https://zod.dev/?id=datetimes

With this kind of plugin declaration inside openapi-ts.config.ts

{
      dateTimeOptions: {
        local: true,
        offset: true,
        precision: 3,
      },
      name: 'zod',
    },

we can have something like this

export const zOrder = z.object({
  complete: z.boolean().optional(),
  id: z.coerce.bigint().optional(),
  petId: z.coerce.bigint().optional(),
  quantity: z.number().int().optional(),
  shipDate: z
    .string()
    .datetime({ local: true, offset: true, precision: 3 })
    .optional(),
  status: z.enum(['placed', 'approved', 'delivered']).optional(),
});

I'm not confortables about hey-api plugins so, feel free to make corrections.