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/camera/retriever.js

@@ -0,0 +1,80 @@
+var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
+    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
+    return new (P || (P = Promise))(function (resolve, reject) {
+        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
+        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
+        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
+        step((generator = generator.apply(thisArg, _arguments || [])).next());
+    });
+};
+import { Html5QrcodeStrings } from "../strings";
+export class CameraRetriever {
+    static retrieve() {
+        if (navigator.mediaDevices) {
+            return CameraRetriever.getCamerasFromMediaDevices();
+        }
+        var mst = MediaStreamTrack;
+        if (MediaStreamTrack && mst.getSources) {
+            return CameraRetriever.getCamerasFromMediaStreamTrack();
+        }
+        return CameraRetriever.rejectWithError();
+    }
+    static rejectWithError() {
+        let errorMessage = Html5QrcodeStrings.unableToQuerySupportedDevices();
+        if (!CameraRetriever.isHttpsOrLocalhost()) {
+            errorMessage = Html5QrcodeStrings.insecureContextCameraQueryError();
+        }
+        return Promise.reject(errorMessage);
+    }
+    static isHttpsOrLocalhost() {
+        if (location.protocol === "https:") {
+            return true;
+        }
+        const host = location.host.split(":")[0];
+        return host === "127.0.0.1" || host === "localhost";
+    }
+    static getCamerasFromMediaDevices() {
+        return __awaiter(this, void 0, void 0, function* () {
+            const closeActiveStreams = (stream) => {
+                const tracks = stream.getVideoTracks();
+                for (const track of tracks) {
+                    track.enabled = false;
+                    track.stop();
+                    stream.removeTrack(track);
+                }
+            };
+            let mediaStream = yield navigator.mediaDevices.getUserMedia({ audio: false, video: true });
+            let devices = yield navigator.mediaDevices.enumerateDevices();
+            let results = [];
+            for (const device of devices) {
+                if (device.kind === "videoinput") {
+                    results.push({
+                        id: device.deviceId,
+                        label: device.label
+                    });
+                }
+            }
+            closeActiveStreams(mediaStream);
+            return results;
+        });
+    }
+    static getCamerasFromMediaStreamTrack() {
+        return new Promise((resolve, _) => {
+            const callback = (sourceInfos) => {
+                const results = [];
+                for (const sourceInfo of sourceInfos) {
+                    if (sourceInfo.kind === "video") {
+                        results.push({
+                            id: sourceInfo.id,
+                            label: sourceInfo.label
+                        });
+                    }
+                }
+                resolve(results);
+            };
+            var mst = MediaStreamTrack;
+            mst.getSources(callback);
+        });
+    }
+}
+//# sourceMappingURL=retriever.js.map