Platform 2025.05.00 esp8266 Arduino core 2.7.8

[Jason2866]

• Platform for esp8266 don't use Platformio registry now (align with esp32 platform)
• no changes in Arduino Core
• no changes in Tasmota code

Checklist:

• The pull request is done against the latest development branch
• Only relevant files were touched
• Only one feature/fix was added per PR and the code change compiles without warnings
• The code change is tested and works with Tasmota core ESP8266 V.2.7.8
• The code change is tested and works with Tasmota core ESP32 V.3.1.3.250504
• I accept the CLA.

NOTE: The code change must pass CI tests. Your PR cannot be merged unless tests pass