Timers Manager: Use AYON settings

[iLLiCiTiT]

Changelog Description

Timers manager addon can use AYON settings without specific conversion. But still requires some conversion to "disable" the addon by removing it's key from output values.

Testing notes:

1. TimersManager can be turned on/off by using version in bundle.
2. Changing settings of timers manager take effect on the addon.

from ayon_core.addon import AddonsManager

manager = AddonsManager()
timers_manager = manager["timers_manager"]
print(timers_manager.time_stop_timer)
>>> Your time from settings * 60