feat: Update Flutter Rust bridge to V2

.gitignore

@@ -2,4 +2,5 @@
 .flutter-plugins-dependencies
 .idea/
 build/
-.dart_tool/
+.dart_tool/
+rust_builder

android/app/build.gradle

@@ -87,33 +87,3 @@ flutter {
 }
 
 dependencies {}
-
-[
-        new Tuple2('Debug', ''),
-        new Tuple2('Profile', '--release'),
-        new Tuple2('Release', '--release')
-].each {
-    def taskPostfix = it.first
-    def profileMode = it.second
-    tasks.whenTaskAdded { task ->
-        if (task.name == "javaPreCompile$taskPostfix") {
-            task.dependsOn "cargoBuild$taskPostfix"
-        }
-    }
-    tasks.register("cargoBuild$taskPostfix", Exec) {
-        // Until https://github.com/bbqsrc/cargo-ndk/pull/13 is merged,
-        // this workaround is necessary.
-
-        def ndk_command = """cargo ndk \
-            -t armeabi-v7a -t arm64-v8a -t x86_64 -t x86 \
-            -o ../android/app/src/main/jniLibs build $profileMode"""
-
-        workingDir "../../native"
-        environment "ANDROID_NDK_HOME", "$ANDROID_NDK"
-        if (org.gradle.nativeplatform.platform.internal.DefaultNativePlatform.currentOperatingSystem.isWindows()) {
-            commandLine 'cmd', '/C', ndk_command
-        } else {
-            commandLine 'sh', '-c', ndk_command
-        }
-    }
-}

flutter_rust_bridge.yaml

@@ -0,0 +1,2 @@
+rust_input: rust/src/api/**/*.rs
+dart_output: lib/src/rust

integration_test/simple_test.dart

@@ -0,0 +1,14 @@
+import 'package:flutter/foundation.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:ascent/main.dart';
+import 'package:ascent/src/rust/frb_generated.dart';
+import 'package:integration_test/integration_test.dart';
+
+void main() {
+  if (kIsWeb) IntegrationTestWidgetsFlutterBinding.ensureInitialized();
+  setUpAll(() async => await RustLib.init());
+  testWidgets('Can call rust function', (WidgetTester tester) async {
+    await tester.pumpWidget(const MyApp());
+    expect(find.textContaining('Result: `Hello, Tom!`'), findsOneWidget);
+  });
+}

lib/ffi.dart

@@ -19,4 +19,4 @@ final _dylib = io.Platform.isWindows ? '$_base.dll' : 'lib$_base.so';
 
 final Native api = NativeImpl(io.Platform.isIOS || io.Platform.isMacOS
     ? DynamicLibrary.executable()
-    : DynamicLibrary.open(_dylib));
+    : DynamicLibrary.open(_dylib));

lib/global_state.dart

@@ -39,4 +39,4 @@ class GlobalState {
 
     rootEnabled.value = await Root.isRooted() ?? false;
   }
-}
+}