feat: implement generator di module

cherrypick_generator/lib/inject_generator.dart

@@ -1,38 +0,0 @@
-import 'dart:async';
-import 'package:build/build.dart';
-import 'package:source_gen/source_gen.dart';
-import 'package:analyzer/dart/element/element.dart';
-import 'package:cherrypick_annotations/cherrypick_annotations.dart';
-
-class InjectGenerator extends GeneratorForAnnotation<Injectable> {
-  @override
-  FutureOr<String> generateForAnnotatedElement(
-    Element element,
-    ConstantReader annotation,
-    BuildStep buildStep,
-  ) {
-    print('[TRACE] Processing element: ${element.name}');
-
-    if (element is! FieldElement) {
-      throw InvalidGenerationSourceError(
-        'Inject can only be used on fields.',
-        element: element,
-      );
-    }
-
-    print('[TRACE] Starting code generation for element: ${element.name}');
-
-    final className = element.enclosingElement.name;
-    final fieldName = element.name;
-    final fieldType = element.type.getDisplayString(withNullability: false);
-    final annotationName = annotation.read('named').stringValue;
-
-    return '''
-extension \$${className}Inject on $className {
-  void init$fieldName() {
-    print("Injected $fieldType named '$annotationName' into $fieldName");
-  }
-}
-''';
-  }
-}