start implement generator code

cherrypick_generator/lib/injectable_generator.dart

@@ -0,0 +1,33 @@
+import 'package:source_gen/source_gen.dart';
+import 'package:analyzer/dart/element/element.dart';
+import 'package:build/build.dart';
+import 'package:cherrypick_annotations/cherrypick_annotations.dart';
+
+class InjectableGenerator extends GeneratorForAnnotation<Injectable> {
+  @override
+  generateForAnnotatedElement(
+      Element element, ConstantReader annotation, BuildStep buildStep) {
+    if (element is! ClassElement) return null;
+
+    final className = element.name;
+
+    // Используйте уникальное имя функции (например, привязанное к файлу/классу)
+    return '''
+void \$initCherrypickGenerated() {
+  print("Generate code success $className");
+}
+''';
+  }
+}
+
+Builder injectableBuilder(BuilderOptions options) =>
+    PartBuilder([InjectableGenerator()], '.cherrypick_injectable.g.dart');
+
+/*
+Builder injectableBuilder(BuilderOptions options) => SharedPartBuilder(
+      [InjectableGenerator()],
+      'injectable',
+      allowSyntaxErrors: true,
+      writeDescriptions: true,
+    );
+*/