Improve changelog with code snippets (#1403)

CHANGELOG.md

@@ -4,14 +4,50 @@
 
 ### Features
 
-- SentryIOOverridesIntegration ([#1362](https://github.com/getsentry/sentry-dart/pull/1362))
+- Add `SentryIOOverridesIntegration` that automatically wraps `File` into `SentryFile`  ([#1362](https://github.com/getsentry/sentry-dart/pull/1362))
+
+```dart
+import 'package:sentry_file/sentry_file.dart';
+
+// SDK init. options
+options.addIntegration(SentryIOOverridesIntegration());
+```
+
 - Add `enableTracing` option ([#1395](https://github.com/getsentry/sentry-dart/pull/1395))
   - This change is backwards compatible. The default is `null` meaning existing behaviour remains unchanged (setting either `tracesSampleRate` or `tracesSampler` enables performance).
   - If set to `true`, performance is enabled, even if no `tracesSampleRate` or `tracesSampler` have been configured.
   - If set to `true`, sampler will use default sample rate of 1.0, if no `tracesSampleRate` is set.
   - If set to `false` performance is disabled, regardless of `tracesSampleRate` and `tracesSampler` options.
+
+```dart
+// SDK init. options
+options.enableTracing = true;
+```
+
 - Sync `connectionTimeout` and `readTimeout` to Android ([#1397](https://github.com/getsentry/sentry-dart/pull/1397))
+
+```dart
+// SDK init. options
+options.connectionTimeout = Duration(seconds: 10);
+options.readTimeout = Duration(seconds: 10);
+```
+
 - Set User `name` and `geo` in native plugins ([#1393](https://github.com/getsentry/sentry-dart/pull/1393))
+
+```dart
+Sentry.configureScope(
+  (scope) => scope.setUser(SentryUser(
+      id: '1234',
+      name: 'Jane Doe',
+      email: '[email protected]',
+      geo: SentryGeo(
+        city: 'Vienna',
+        countryCode: 'AT',
+        region: 'Austria',
+      ))),
+);
+```
+
 - Add processor count to device info ([#1402](https://github.com/getsentry/sentry-dart/pull/1402))
 - Add attachments to `Hint` ([#1404](https://github.com/getsentry/sentry-dart/pull/1404))