Add led effect to DCSpy

[emcek]

Description

Allow to pulse led when i.e. master caution is set.

what when 2 filed request effect? Flow

• apply effect_1
• apply effect_2
  • shutdown
  • save effect_1
  • apply effect_2

optional flow 1

• deactive effect_1
  • only remove from heap

optional flow 2

• deactive effect_2
  • remove from heap effect_2
  • shutdown
  • apply effect_1

add callback to exiting BIOS_VALUE

BIOS_VALUE = TypedDict('BIOS_VALUE', {'class': str, 'args': PROTO_ARGS, 'value': Union[int, str], 'max_value': int, 'callback': str}, total=False)

led setting

where (if at all) set options for LED effect

• config.yaml
• hardcode
• BIOS_VALUE (old) as dict

test start_led_pulse vs. start_led_flash

try parametrize setting in config if you end-up with one field

findings

• No thread, no events, no sleep time needed
• need keep track of active effects in OrderedDict (due to py3.6 can not be regular dict)
• when one effect is active others can not be applied

Todo

• [ ] Tests
• [ ] Documentation