Hell disco

• new scanner startup.
• torch, stop and continuous decode refactor.
• removed some methods already implemented in base library.
• migrated some methods to base library.
• updated app demo with experimental torch implementation.
• rewrited continuous decode logic with new sync decode loop, ~400ms per scan performance improvement.
• fixed autostart.
• fixed scannerEnabled.
• exposed codeReader so users can take advantage of its APIs.
• renamed isAlreadyDefinedDevice to isCurrentDevice.
• fixed collective links.
• updated base library.