feat(core): update session, security system and QR exchange

- Removed session creation and Lightning payment logic
- Refactored security system:
  * no more restrictions
  * all systems enabled on session creation
- Improved QR code exchange for mobile devices

node_modules/html5-qrcode/es2015/utils.d.ts

@@ -0,0 +1,4 @@
+import { Logger } from "./core";
+export declare class VideoConstraintsUtil {
+    static isMediaStreamConstraintsValid(videoConstraints: MediaTrackConstraints, logger: Logger): boolean;
+}