Add OpenHarmony (ohos) support to examples and cnativeapi

Introduces OpenHarmony (ohos) platform support for display_example and cnativeapi/example, including configuration files, resource files, build scripts, and test suites. Updates .metadata and pubspec.yaml files to reflect the new platform and adjusts SDK and lint versions. Minor code change in display_example to comment out cardTheme usage.

Author: lijy91

examples/display_example/.metadata

@@ -4,20 +4,20 @@
 # This file should be version controlled and should not be manually edited.
 
 version:
-  revision: "9f455d2486bcb28cad87b062475f42edc959f636"
-  channel: "stable"
+  revision: "c4a66f77d0e5047ddf5a1bd353fd3ee9cbfeafcd"
+  channel: "[user-branch]"
 
 project_type: app
 
 # Tracks metadata for the flutter migrate command
 migration:
   platforms:
     - platform: root
-      create_revision: 9f455d2486bcb28cad87b062475f42edc959f636
-      base_revision: 9f455d2486bcb28cad87b062475f42edc959f636
-    - platform: ios
-      create_revision: 9f455d2486bcb28cad87b062475f42edc959f636
-      base_revision: 9f455d2486bcb28cad87b062475f42edc959f636
+      create_revision: c4a66f77d0e5047ddf5a1bd353fd3ee9cbfeafcd
+      base_revision: c4a66f77d0e5047ddf5a1bd353fd3ee9cbfeafcd
+    - platform: ohos
+      create_revision: c4a66f77d0e5047ddf5a1bd353fd3ee9cbfeafcd
+      base_revision: c4a66f77d0e5047ddf5a1bd353fd3ee9cbfeafcd
 
   # User provided section
 

examples/display_example/lib/main.dart

@@ -16,7 +16,7 @@ class MyApp extends StatelessWidget {
       theme: ThemeData(
         colorScheme: ColorScheme.fromSeed(seedColor: Colors.blue),
         useMaterial3: true,
-        cardTheme: const CardThemeData(elevation: 2, margin: EdgeInsets.all(8)),
+        // cardTheme: const CardThemeData(elevation: 2, margin: EdgeInsets.all(8)),
       ),
       home: const DisplayManagerPage(),
     );

examples/display_example/ohos/.gitignore

@@ -0,0 +1,20 @@
+/node_modules
+/oh_modules
+/local.properties
+/.idea
+**/build
+/.hvigor
+.cxx
+/.clangd
+/.clang-format
+/.clang-tidy
+**/.test
+**/BuildProfile.ets
+**/oh-package-lock.json5
+/package.json
+/package-lock.json
+
+**/src/main/resources/rawfile/flutter_assets/
+**/libs/**/libapp.so
+**/libs/**/libflutter.so
+**/libs/**/libvmservice_snapshot.so

examples/display_example/ohos/AppScope/app.json5

@@ -0,0 +1,10 @@
+{
+  "app": {
+    "bundleName": "com.example.display_example",
+    "vendor": "example",
+    "versionCode": 1000000,
+    "versionName": "1.0.0",
+    "icon": "$media:app_icon",
+    "label": "$string:app_name"
+  }
+}

examples/display_example/ohos/AppScope/resources/base/element/string.json

@@ -0,0 +1,8 @@
+{
+  "string": [
+    {
+      "name": "app_name",
+      "value": "display_example"
+    }
+  ]
+}

examples/display_example/ohos/AppScope/resources/base/media/app_icon.png

@@ -0,0 +1,40 @@
+{
+  "app": {
+    "signingConfigs": [
+    ],
+    "products": [
+      {
+        "name": "default",
+        "signingConfig": "default",
+        "compatibleSdkVersion": "5.1.0(18)",
+        "runtimeOS": "HarmonyOS",
+        "targetSdkVersion": "6.0.0(20)"
+      }
+    ],
+    "buildModeSet": [
+      {
+        "name": "debug"
+      },
+      {
+        "name": "profile"
+      },
+      {
+        "name": "release"
+      }
+    ]
+  },
+  "modules": [
+    {
+      "name": "entry",
+      "srcPath": "./entry",
+      "targets": [
+        {
+          "name": "default",
+          "applyToProducts": [
+            "default"
+          ]
+        }
+      ]
+    }
+  ]
+}

examples/display_example/ohos/build-profile.json5

@@ -0,0 +1,7 @@
+/node_modules
+/oh_modules
+/.preview
+/build
+/.cxx
+/.test
+GeneratedPluginRegistrant.ets

examples/display_example/ohos/entry/.gitignore

@@ -0,0 +1,15 @@
+
+{
+  "apiType": 'stageMode',
+  "buildOption": {
+  },
+  "targets": [
+    {
+      "name": "default",
+      "runtimeOS": "HarmonyOS"
+    },
+    {
+      "name": "ohosTest",
+    }
+  ]
+}

examples/display_example/ohos/entry/build-profile.json5

@@ -0,0 +1,7 @@
+
+// Script for compiling build behavior. It is built in the build plug-in and cannot be modified currently.
+import { hapTasks } from '@ohos/hvigor-ohos-plugin';
+export default {
+    system: hapTasks,  /* Built-in plugin of Hvigor. It cannot be modified. */
+    plugins: []        /* Custom plugin to extend the functionality of Hvigor. */
+}