[BT] Add capability to remove the decoder when using BT (#2028)

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

environments.ini

@@ -362,9 +362,9 @@ board_build.partitions = min_spiffs.csv
 lib_deps =
   ${com-esp32.lib_deps}
   ${libraries.ble}
-  ${libraries.decoder}
 build_flags =
   ${com-esp32.build_flags}
+  '-DBLEDecoder=false'
   '-DZgatewayBT="BT"'
   '-DLED_SEND_RECEIVE=2'
   '-DLED_SEND_RECEIVE_ON=0'