Add screen/LED controls for Heltec V3#1599

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Koreanman01 wants to merge 2 commits intomeshcore-dev:devfrom

Koreanman01:heltec-v3-screen-led-dev

Commits on Feb 10, 2026

Heltec V3 screen/LED controls with brightness in main SSD1306 driver
Koreanman01
committed

Commits on Feb 20, 2026

Merge branch 'dev' into heltec-v3-screen-led-dev
Koreanman01
authored