Create Flux-Night-Light.md

[FluxOpenHome]

Adds device listing for the Flux Night Light — an open-source, ESPHome-powered night light using ESP32-C3 with 16 WS2812 addressable LEDs in a 4x4 grid. Includes 13 built-in effects, OTA updates, and WLED compatibility.

Brief description of the changes

Adds device listing for the Flux Night Light — an open-source, ESPHome-powered night light using ESP32-C3 with 16 WS2812 addressable LEDs in a 4x4 grid. Includes 13 built-in effects, OTA updates, and WLED compatibility.

Type of changes

• New device
• Update existing device
• Removing a device
• General cleanup
• Other

Checklist:

• There are no passwords or secrets references in any examples.
  The only exceptions are !secret wifi_ssid and !secret wifi_password.
• The wifi or ethernet block has no static / manual ip address specified.
• The first configuration provided should be hardware definitions only.
  A more involved example can be provided in a separate configuration block.

Made for ESPHome Checklist

• Project is powered by an ESP32 or supported variant such as C3, C6, S2, S3 etc.
• Project is using ESPHome firmware
• Project name cannot contain ESPHome except in the case of ending with for ESPHome
• ESPHome configuration is open source and available for end users to modify/update
• If the device uses Wi-Fi:
  • Configuration contains esp32_improv: (documentation)
  • Configuration contains improv_serial: if there is a USB port (documentation)
• Users should be able to apply updates to your device:
  • Device can be "taken control" of by the user using the ESPHome Builder
    • Configuration includes dashboard_import: to facilitate this (documentation)
    • Configuration contains the ota.esphome component (documentation)
    • Serial flashing is not disabled
    • There are no references to secrets in the configuration
    • There are no passwords in the configuration
    • There are no static IP addresses in the configuration
    • The configuration must be valid, compile and run successfully without any user changes after taking control
    • Every entity/component (sensor, switch, etc.) must have an id defined
  • OTA Updates are provided via the update.http_request component (documentation)

[netlify]

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Lighthouse	1 paths audited Performance: 74 (🔴 down 2 from production) Accessibility: 97 (no change from production) Best Practices: 100 (no change from production) SEO: 90 (no change from production) PWA: - View the detailed breakdown and full score reports

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[github-actions]

This PR has been labeled as Made for ESPHome and is pending review. Please complete the checklist added to the description above.

[esphome]

Please take a look at the requested changes, and use the Ready for review button when you are done, thanks 👍

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