Replace deprecated constant for HA 2024.1

[hmmbob]

Had these in my logs:

2023-12-31 14:33:19.819 WARNING (MainThread) [homeassistant.components.camera] SUPPORT_ON_OFF was used from xiaomi_cloud_map_extractor, this is a deprecated constant which will be removed in HA Core 2025.1. Use CameraEntityFeature.ON_OFF instead, please create a bug report at https://github.com/PiotrMachowski/Home-Assistant-custom-components-Xiaomi-Cloud-Map-Extractor/issues
2023-12-31 14:33:19.823 WARNING (MainThread) [homeassistant.components.camera] SUPPORT_ON_OFF was used from xiaomi_cloud_map_extractor, this is a deprecated constant which will be removed in HA Core 2025.1. Use CameraEntityFeature.ON_OFF instead, please create a bug report at https://github.com/PiotrMachowski/Home-Assistant-custom-components-Xiaomi-Cloud-Map-Extractor/issues
2023-12-31 14:33:24.736 WARNING (MainThread) [homeassistant.helpers.entity] Entity camera.stofzuiger (<class 'custom_components.xiaomi_cloud_map_extractor.camera.VacuumCamera'>) is using deprecated supported features values which will be removed in HA Core 2025.1. Instead it should use <CameraEntityFeature.ON_OFF: 1>, please create a bug report at https://github.com/PiotrMachowski/Home-Assistant-custom-components-Xiaomi-Cloud-Map-Extractor/issues and reference https://developers.home-assistant.io/blog/2023/12/28/support-feature-magic-numbers-deprecation

It was a straight forward fix.... 😄 Tested locally, runs fine. CameraEntityFeature has been around since 2022.5, so this should be non-breaking for older HA versions.

Docs: https://developers.home-assistant.io/blog/2023/12/28/support-feature-magic-numbers-deprecation/

[gieljnssns]

Why doesn't get this merged?

[MrHollowPS]

looks good. same patch i applied locally.