refactor: BLE scanning instead of connecting to BLE devices (#243)

* refactor: passive scan instead of connecting to BLE devices

* refactor: increased disconnected timeout for sensors

* fix: build for nodemcu32, c3, c6 boards; formatting ``platformio.ini``

* refactor: decreased interval and window for scanning BLE

* refactor: active + passive BLE scanning

* refactor: reduced tasks stack size

* style: formatting

* refactor: improved OTA upgrade

https://github.com/ESP32Async/ESPAsyncWebServer/pull/329

* chore: fix dependencies

* chore: reformat `platformio.ini`

* chore: dependencies fixed

* feat: added support BTHome v2 format for BLE sensors #215

* refactor: cosmetic changes

* fix: move OpenThermTask to 0 core

* chore: minimizing flash size with NimBLE

* chore: dependencies updated

src/OpenThermTask.h

@@ -37,9 +37,13 @@ protected:
   const char* getTaskName() override {
     return "OpenTherm";
   }
+
+  uint32_t getTaskStackSize() override {
+    return 7500;
+  }
   
   BaseType_t getTaskCore() override {
-    return 1;
+    return 0;
   }
 
   int getTaskPriority() override {