refactor: migrate Dart and Flutter sdks to inline product options syntax

docs/platforms/dart/common/index.mdx

@@ -51,7 +51,7 @@ dependencies:
 To capture all errors, initialize the Sentry Dart SDK as soon as possible.
 
 
-```dart {"onboardingOptions": {"performance": "9-11"}}
+```dart
 import 'package:sentry/sentry.dart';
 
 Future<void> main() async {
@@ -60,9 +60,11 @@ Future<void> main() async {
     // Adds request headers and IP for users,
     // visit: https://docs.sentry.io/platforms/dart/data-management/data-collected/ for more info
     options.sendDefaultPii = true;
+    // ___PRODUCT_OPTION_START___ performance
     // Set tracesSampleRate to 1.0 to capture 100% of transactions for tracing.
     // We recommend adjusting this value in production.
     options.tracesSampleRate = 1.0;
+    // ___PRODUCT_OPTION_END___ performance
   });
 
   // you can also configure SENTRY_DSN, SENTRY_RELEASE, SENTRY_DIST, and

docs/platforms/dart/guides/flutter/index.mdx

@@ -61,7 +61,7 @@ npx @sentry/wizard@latest -i flutter
 
 Configuration should happen as early as possible in your application's lifecycle.
 
-```dart {"onboardingOptions": {"performance": "11-13", "profiling": "14-17"}}
+```dart
 import 'package:flutter/widgets.dart';
 import 'package:sentry_flutter/sentry_flutter.dart';
 
@@ -72,13 +72,17 @@ Future<void> main() async {
       // Adds request headers and IP for users,
       // visit: https://docs.sentry.io/platforms/dart/guides/flutter/data-management/data-collected/ for more info
       options.sendDefaultPii = true;
+      // ___PRODUCT_OPTION_START___ performance
       // Set tracesSampleRate to 1.0 to capture 100% of transactions for tracing.
       // We recommend adjusting this value in production.
       options.tracesSampleRate = 1.0;
+      // ___PRODUCT_OPTION_END___ performance
+      // ___PRODUCT_OPTION_START___ profiling
       // The sampling rate for profiling is relative to tracesSampleRate
       // Setting to 1.0 will profile 100% of sampled transactions:
       // Note: Profiling alpha is available for iOS and macOS since SDK version 7.12.0
       options.profilesSampleRate = 1.0;
+      // ___PRODUCT_OPTION_END___ profiling
     },
     appRunner: () => runApp(
       SentryWidget(
@@ -92,7 +96,7 @@ Future<void> main() async {
 }
 ```
 
-```dart {tabTitle:With custom zone}  {"onboardingOptions": {"performance": "19-21", "profiling": "22-25"}}
+```dart {tabTitle:With custom zone}
 import 'package:flutter/widgets.dart';
 import 'package:sentry_flutter/sentry_flutter.dart';
 
@@ -111,13 +115,17 @@ Future<void> main() async {
         // Adds request headers and IP for users,
         // visit: https://docs.sentry.io/platforms/dart/guides/flutter/data-management/data-collected/ for more info
         options.sendDefaultPii = true;
+        // ___PRODUCT_OPTION_START___ performance
         // Set tracesSampleRate to 1.0 to capture 100% of transactions for tracing.
         // We recommend adjusting this value in production.
         options.tracesSampleRate = 1.0;
+        // ___PRODUCT_OPTION_END___ performance
+        // ___PRODUCT_OPTION_START___ profiling
         // The sampling rate for profiling is relative to tracesSampleRate
         // Setting to 1.0 will profile 100% of sampled transactions:
         // Note: Profiling alpha is available for iOS and macOS since SDK version 7.12.0
         options.profilesSampleRate = 1.0;
+        // ___PRODUCT_OPTION_END___ profiling
       },
       appRunner: () => runApp(
         SentryWidget(

docs/platforms/dart/guides/flutter/manual-setup.mdx

@@ -27,7 +27,7 @@ dependencies:
 
 Configuration should happen as early as possible in your application's lifecycle.
 
-```dart {"onboardingOptions": {"performance": "11-13", "profiling": "14-17"}}
+```dart
 import 'package:flutter/widgets.dart';
 import 'package:sentry_flutter/sentry_flutter.dart';
 
@@ -38,13 +38,17 @@ Future<void> main() async {
       // Adds request headers and IP for users,
       // visit: https://docs.sentry.io/platforms/dart/guides/flutter/data-management/data-collected/ for more info
       options.sendDefaultPii = true;
+      // ___PRODUCT_OPTION_START___ performance
       // Set tracesSampleRate to 1.0 to capture 100% of transactions for tracing.
       // We recommend adjusting this value in production.
       options.tracesSampleRate = 1.0;
+      // ___PRODUCT_OPTION_END___ performance
+      // ___PRODUCT_OPTION_START___ profiling
       // The sampling rate for profiling is relative to tracesSampleRate
       // Setting to 1.0 will profile 100% of sampled transactions:
       // Note: Profiling alpha is available for iOS and macOS since SDK version 7.12.0
       options.profilesSampleRate = 1.0;
+      // ___PRODUCT_OPTION_END___ profiling
     },
     appRunner: () => runApp(
       SentryWidget(
@@ -58,7 +62,7 @@ Future<void> main() async {
 }
 ```
 
-```dart {tabTitle:With custom zone}  {"onboardingOptions": {"performance": "19-21", "profiling": "22-25"}}
+```dart {tabTitle:With custom zone}
 import 'package:flutter/widgets.dart';
 import 'package:sentry_flutter/sentry_flutter.dart';
 
@@ -77,13 +81,17 @@ Future<void> main() async {
         // Adds request headers and IP for users,
         // visit: https://docs.sentry.io/platforms/dart/guides//data-management/data-collected/ for more info
         options.sendDefaultPii = true;
+        // ___PRODUCT_OPTION_START___ performance
         // Set tracesSampleRate to 1.0 to capture 100% of transactions for tracing.
         // We recommend adjusting this value in production.
         options.tracesSampleRate = 1.0;
+        // ___PRODUCT_OPTION_END___ performance
+        // ___PRODUCT_OPTION_START___ profiling
         // The sampling rate for profiling is relative to tracesSampleRate
         // Setting to 1.0 will profile 100% of sampled transactions:
         // Note: Profiling alpha is available for iOS and macOS since SDK version 7.12.0
         options.profilesSampleRate = 1.0;
+        // ___PRODUCT_OPTION_END___ profiling
       },
       appRunner: () => runApp(
         SentryWidget(