Alternative method for h-bridge light

**Describe the problem you have/What new integration you would like**

The actual method for h bridge light change the direction in each loop each 16ms (as minimal), so, so, each light have a max of 30hz (60 of total).

This cause flicking sometimes-

**Please describe your use case for this integration and alternatives you've tried:**
I am trying some alternatives and I get a big improve using cwww component with inverted PWM and max 50% power:

```yaml
output:
- platform: ledc
id: pina
inverted: true
pin:
number: 5
inverted: True
channel: 0
max_power: 50%
- platform: ledc
id: pinb
pin: GPIO6
channel: 2
max_power: 50%

light:
- platform: cwww
name: "Lights"
cold_white: pina
warm_white: pinb
cold_white_color_temperature: 6536 K
warm_white_color_temperature: 2000 K
```

I think this approach could be used in h-bridge method instead change direction in each loop.

**Additional context**

Start by reviewing the existing h-bridge light implementation and comparing its direction-switching behavior with the cwww configuration shown in the request. Done means providing an agreed alternative that avoids the reported flicker while preserving the intended light control behavior; the payload names no files or tests to run.

Written by the indexing model from the issue text.