ADD lambda set value/min/max for number component

[ananyevgv]

There is a need to change the min and max values, depending on the selected effect, so as not to exceed the allowed range of values.

number:

• platform: template
  name: ${devicename} Fastled Variant
  min_value: !lambda 'return id(min_variant);'
  max_value: !lambda 'return id(max_variant);'
  step: 1
  optimistic: true
  id: fastled_variant
  initial_value: 128
  mode: slider
  entity_category: config