feat(shorebird_cli): add release instructions to shorebird release ios (#627)

packages/shorebird_cli/lib/src/commands/release/release_ios_command.dart

@@ -89,18 +89,17 @@ make smaller updates to your app.
     buildProgress.complete();
 
     final releaseVersionProgress = logger.progress('Getting release version');
+    final pubspec = getPubspecYaml()!;
+    final ipaPath = p.join(
+      Directory.current.path,
+      'build',
+      'ios',
+      'ipa',
+      '${pubspec.name}.ipa',
+    );
     String releaseVersion;
     try {
-      final pubspec = getPubspecYaml()!;
-      final ipa = _ipaReader.read(
-        p.join(
-          Directory.current.path,
-          'build',
-          'ios',
-          'ipa',
-          '${pubspec.name}.ipa',
-        ),
-      );
+      final ipa = _ipaReader.read(ipaPath);
       releaseVersion = ipa.versionNumber;
     } catch (error) {
       releaseVersionProgress.fail(
@@ -166,7 +165,20 @@ Please bump your version number and try again.''',
       flutterRevision: shorebirdFlutterRevision,
     );
 
-    logger.success('\n✅ Published Release!');
+    final relativeIpaPath = p.relative(ipaPath);
+
+    logger
+      ..success('\n✅ Published Release!')
+      ..info('''
+
+Your next step is to upload the ipa to App Store Connect.
+${lightCyan.wrap(relativeIpaPath)}
+
+To upload to the App Store either:
+    1. Drag and drop the "$relativeIpaPath" bundle into the Apple Transporter macOS app (https://apps.apple.com/us/app/transporter/id1450874784)
+    2. Run ${lightCyan.wrap('xcrun altool --upload-app --type ios -f $relativeIpaPath --apiKey your_api_key --apiIssuer your_issuer_id')}.
+       See "man altool" for details about how to authenticate with the App Store Connect API key.
+''');
 
     return ExitCode.success.code;
   }

packages/shorebird_cli/test/src/commands/release/release_ios_command_test.dart

@@ -432,6 +432,18 @@ Please bump your version number and try again.'''),
       );
 
       verify(() => logger.success('\n✅ Published Release!')).called(1);
+      verify(
+        () => logger.info(
+          any(
+            that: stringContainsInOrder(
+              [
+                'Your next step is to upload the ipa to App Store Connect.',
+                'build/ios/ipa/example.ipa',
+              ],
+            ),
+          ),
+        ),
+      ).called(1);
       expect(exitCode, ExitCode.success.code);
     });
 
@@ -456,6 +468,18 @@ flavors:
       );
 
       verify(() => logger.success('\n✅ Published Release!')).called(1);
+      verify(
+        () => logger.info(
+          any(
+            that: stringContainsInOrder(
+              [
+                'Your next step is to upload the ipa to App Store Connect.',
+                'build/ios/ipa/example.ipa',
+              ],
+            ),
+          ),
+        ),
+      ).called(1);
       expect(exitCode, ExitCode.success.code);
     });
   });