feat: error reporting with logs (#45)

* feat: add ability to get logs file from ui

* test: add unit test for log line parsing in logs_provider

* refactor: update all logs to obfuscate sensitive information

* feat: generate dynamic zip file name for logs export

* feat: enhance logging in audiobook player and provider for better debugging

* refactor: extract user display logic into UserBar widget for offline access of settings and logs

* feat: add About section with app metadata and source code link in YouPage

lib/shared/extensions/obfuscation.dart

@@ -0,0 +1,125 @@
+import 'package:flutter/foundation.dart';
+import 'package:http/http.dart' as http;
+import 'package:vaani/settings/models/api_settings.dart';
+import 'package:vaani/settings/models/audiobookshelf_server.dart';
+import 'package:vaani/settings/models/authenticated_user.dart';
+
+// bool kReleaseMode = true;
+
+extension ObfuscateString on String {
+  String obfuscate() {
+    if (!kReleaseMode) {
+      return this;
+    }
+    return 'obfuscated';
+  }
+}
+
+extension ObfuscateURI on Uri {
+  /// keeps everything except the base url for security reasons
+  Uri obfuscate() {
+    if (!kReleaseMode) {
+      return this;
+    }
+
+    // do not obfuscate the local host
+    if ([null, 'localhost'].contains(host)) {
+      return this;
+    }
+
+    // do not obfuscate file urls
+    if (scheme == 'file') {
+      return this;
+    }
+
+    return replace(
+      userInfo: userInfo == '' ? '' : 'userInfoObfuscated',
+      host: 'hostObfuscated',
+    );
+  }
+}
+
+extension ObfuscateList<T> on List<T> {
+  List<T> obfuscate() {
+    return map((e) {
+      if (e is AuthenticatedUser) {
+        return e.obfuscate() as T;
+      } else if (e is AudiobookShelfServer) {
+        return e.obfuscate() as T;
+      } else if (e is Uri) {
+        return e.obfuscate() as T;
+      } else {
+        return e;
+      }
+    }).toList();
+  }
+}
+
+extension ObfuscateSet<T> on Set<T> {
+  Set<T> obfuscate() {
+    return toList().obfuscate().toSet();
+  }
+}
+
+extension ObfuscateAuthenticatedUser on AuthenticatedUser {
+  AuthenticatedUser obfuscate() {
+    if (!kReleaseMode) {
+      return this;
+    }
+    return copyWith(
+      password: password == null ? null : 'passwordObfuscated',
+      username: username == null ? null : 'usernameObfuscated',
+      authToken: 'authTokenObfuscated',
+      server: server.obfuscate(),
+    );
+  }
+}
+
+extension ObfuscateServer on AudiobookShelfServer {
+  AudiobookShelfServer obfuscate() {
+    if (!kReleaseMode) {
+      return this;
+    }
+    return copyWith(
+      serverUrl: serverUrl.obfuscate(),
+    );
+  }
+}
+
+extension ObfuscateApiSettings on ApiSettings {
+  ApiSettings obfuscate() {
+    if (!kReleaseMode) {
+      return this;
+    }
+    return copyWith(
+      activeServer: activeServer?.obfuscate(),
+      activeUser: activeUser?.obfuscate(),
+    );
+  }
+}
+
+extension ObfuscateRequest on http.BaseRequest {
+  http.BaseRequest obfuscate() {
+    if (!kReleaseMode) {
+      return this;
+    }
+    return http.Request(
+      method,
+      url.obfuscate(),
+    );
+  }
+}
+
+extension ObfuscateResponse on http.Response {
+  http.Response obfuscate() {
+    if (!kReleaseMode) {
+      return this;
+    }
+    return http.Response(
+      body,
+      statusCode,
+      headers: headers,
+      request: request?.obfuscate(),
+    );
+  }
+}