[LED] Add LED STRIP macros and a third Addressable pin (#2063)

* [LED] Add LED STRIP macros and a third Addressable pin

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Co-authored-by: Florian <1technophile@users.noreply.github.com>

lib/LEDManager/LEDManager.cpp

@@ -54,6 +54,10 @@ void LEDManager::setMode(int stripIndex, int ledIndex, Mode mode, uint32_t color
     } else if (ledIndex >= 0 && ledIndex < ledStrips[stripIndex].ledStates.size()) {
       setModeForSingleLED(stripIndex, ledIndex, mode, color, durationOrBlinkCount);
     }
+  } else if (stripIndex == -1) {
+    for (int i = 0; i < ledStrips.size(); i++) {
+      setMode(i, ledIndex, mode, color, durationOrBlinkCount);
+    }
   }
 }