feat: implement heal subsystem for automatic data repair

- Add heal module with core types (HealType, HealRequest, HealTask)
- Implement HealManager for task scheduling and execution
- Add HealStorageAPI trait and ECStoreHealStorage implementation
- Integrate heal capabilities into scanner for automatic repair
- Support multiple heal types: object, bucket, disk, metadata, MRF, EC decode
- Add progress tracking and event system for heal operations
- Merge heal and scanner error types for unified error handling
- Include comprehensive logging and metrics for heal operations

Signed-off-by: junxiang Mu <1948535941@qq.com>

crates/ahm/src/heal/mod.rs

@@ -0,0 +1,22 @@
+// Copyright 2024 RustFS Team
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+pub mod event;
+pub mod manager;
+pub mod progress;
+pub mod storage;
+pub mod task;
+
+pub use manager::HealManager;
+pub use task::{HealOptions, HealPriority, HealRequest, HealTask, HealType};