New board: Elecrow CrowPanel Avance 2.8" (#224)

- Added new board
- Extracted ST7789 driver and backlight PWM driver into separate subprojects
- Refactored T-Deck to use the shared driver modules
- Fix bug in WiFi service: searching for APs was broken

TactilityHeadless/Source/service/wifi/WifiEsp.cpp

@@ -381,7 +381,7 @@ static bool copy_scan_list(std::shared_ptr<Wifi> wifi) {
     }
 
     auto lock = wifi->dataMutex.asScopedLock();
-    if (lock.lock()) {
+    if (!lock.lock()) {
         return false;
     }