Support for T-Echo Lite, credits to @Szetya for doing all the heavy lifting! (#7636)

* Support for T-Echo Lite, credts to @Szetya for doing all the heavy lifting!
* move define to ini file

src/main.cpp

@@ -325,8 +325,12 @@ void setup()
 
 #ifdef BLE_LED
     pinMode(BLE_LED, OUTPUT);
+#ifdef BLE_LED_INVERTED
+    digitalWrite(BLE_LED, HIGH);
+#else
     digitalWrite(BLE_LED, LOW);
 #endif
+#endif
 
 #if defined(T_DECK)
     // GPIO10 manages all peripheral power supplies