Browser <-> desktop communication (#185)

* Add electron constant for browser integration

* Add constant for browser biometrics. Ensure biometry is locked on lock.

* Avoid saving keys outside desktop

* Fix eslint warning

* Add supportsSecureStorage helper to platformUtils to improve readability

src/cli/services/cliPlatformUtils.service.ts

@@ -145,4 +145,8 @@ export class CliPlatformUtilsService implements PlatformUtilsService {
     authenticateBiometric(): Promise<boolean> {
         return Promise.resolve(false);
     }
+
+    supportsSecureStorage(): boolean {
+        return false;
+    }
 }