feat!(bluelight): refactor bluelight to use factory method

[Dynge]

This is a breaking change for the bluelight filter widget.

It refactors the widget to use a factory in order to allow the user to pass in options.
Thus the user does not have to edit the source code of the widget to pass other arguments to redshift.

I've also added the -P flag to the night_cmd in order to clear any existing redshift hue. This ensures that the redshift does not append if any filter already exists.

The new way to use the bluelight widget would be the following:

local bluelight_widget = require("awesome-wm-widgets.bluelight-widget")
local margin = require("awesome-wm-widgets.margin") -- In case you use my wrapper

s.mytasklist, -- Middle widget
    { -- Right widgets
        layout = wibox.layout.fixed.horizontal,
        ...
        bluelight_widget(), -- Add the widget here
        margin(bluelight_widget(), true), -- Add the widget with my wrapper
        bluelight_widget({night_args = "-O 3500 -P"}), -- Add options to widget
        ...
    }