Add bulb: yeelink.light.mono6

yeelink.light.mono6 is the "Mi Smart LED Bulb (Warm White)" works like other single colour bulbs. Model on bulb: XMBGDP01YLK

Bulb parameters:

• power: on
• bright: 100
• ct: None
• rgb: None
• hue: None
• sat: None
• color_mode: None
• flowing: 0
• delayoff: 0
• music_on: None
• name: None
• bg_power: None
• bg_flowing: None
• bg_ct: None
• bg_bright: None
• bg_hue: None
• bg_sat: None
• bg_rgb: None
• nl_br: 0
• active_mode: None
• current_brightness: 100