Permit different range with template

[StefanoMartin]

When I create a value I would like to be able to overwrite the default behaviour of a template.

With a real case:

chargeLimit = await device.createValue({
      name: 'charge_limit',
      permission: 'rw',
      template: Wappsto.ValueTemplate.PERCENTAGE
    })

However Tesla car default value smaller than 50 to 50. So, it would make more sense to have:

chargeLimit = await device.createValue({
      name: 'charge_limit',
      permission: 'rw',
      min: 50,
      template: Wappsto.ValueTemplate.PERCENTAGE
    })

However the new minimum is not setup as expected.