Build firmware with gh actions

[jesserockz]

This will deploy the firmware to https://esphome.github.io/voice-kit where there is a minimal esp-web-tools button to install.

If the firmware is set up with OTA then the files will also be ready to use.

http_request:

ota:
  - platform: esphome
    id: ota_esphome
  - platform: http_request
    id: ota_http_request

update:
  - platform: http_request
    id: update_http_request
    name: Firmware
    source: https://esphome.github.io/voice-kit/manifest.json