Add dim mode to night_light for air purifier.

[vlebourl]

Closing #50

[sourcery-ai]

Sourcery Code Quality Report

❌  Merging this PR will decrease code quality in the affected files by 0.59%.

Quality metrics	Before	After	Change
Complexity	2.20 ⭐	2.47 ⭐	0.27 👎
Method Length	37.95 ⭐	39.50 ⭐	1.55 👎
Working memory	5.42 ⭐	5.47 ⭐	0.05 👎
Quality	83.35% ⭐	82.76% ⭐	-0.59% 👎

Other metrics	Before	After	Change
Lines	214	221	7

Changed files	Quality Before	Quality After	Quality Change
custom_components/vesync/light.py	83.35% ⭐	82.76% ⭐	-0.59% 👎

Here are some functions in these files that still need a tune-up:

File	Function	Complexity	Length	Working Memory	Quality	Recommendation
custom_components/vesync/light.py	VeSyncBaseLight.turn_on	5 ⭐	128 😞	10 😞	60.44% 🙂	Try splitting into smaller methods. Extract out complex expressions

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[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[vlebourl]

This hasn't been tested as I don't own the device. The intended use is to add brightness to the night light, and whenenver that brightness isn't 255, use "dim" instead of "on".

Another solution could be to look at "effect" instead of "brightness", but I've never done it yet, so I'm not sure how that works, and it's hard to test without the device.