[FEATURE] Enable unique MAC-suffixed hostnames in the official Web Serial firmware

Before you start

• I searched existing issues for related requests.
• I checked docs/ROADMAP.md to see whether this is already planned.

Area

Firmware installation or provisioning

Firmware

ESPHome

Summary

When commissioning a new device for for use with ESPHome/Homeassistant, the current firmware has the device name baked into the firmware (ESPectre). This only allow a single device to be added easily to ESPHome/Homeassistant. If the last 4 characters of the devices MAC address were appended to the device name during flashing (ie: espectre-28-58), this would easily enable additional ESPectre devices to be commissioned and added to ESPHome/Homeassistant with no additional configuration needed by end users

Problem or use case

Currently additional devices need to have custom configurations applied to enable multiple ESPectre device to be added to ESPHome/HomeAssistant.

Suggested behavior

No response

Alternatives considered

No response

Implementation notes

No response

Contribution

• I am willing to help implement this feature.