refactor, feat: added proton auth support, added instruction for proton, added errors, some refactor and cleanup

setting/utils/protonBackupExport.js

@@ -0,0 +1,11 @@
+export class ProtonBackupExport {
+    version;
+    entries = Array.of(ProtonTotpRecord);
+}
+
+export class ProtonTotpRecord {
+    content = {
+        uri,
+        entry_type,
+    }
+}