feat(mito): bulk insert request handling on datanode (#5831)

* wip: implement basic request handling

* feat/bulk-insert:
 ### Add Error Handling and Enhance Bulk Insert Functionality

 - **Error Handling**: Introduced a new error variant `ConvertDataType` in `error.rs` to handle conversion failures from `ConcreteDataType` to `ColumnDataType`.
 - **Bulk Insert Enhancements**:
   - Updated `WorkerRequest::BulkInserts` in `request.rs` to include metadata and sender.
   - Implemented `handle_bulk_inserts` in `worker.rs` to process bulk insert requests with region metadata.
   - Added functions `region_metadata_to_column_schema` and `record_batch_to_rows` in `handle_bulk_insert.rs` for schema conversion and row processing.
 - **API Changes**: Modified `RegionBulkInsertsRequest` in `region_request.rs` to include `region_id`.

 Files affected: `error.rs`, `request.rs`, `worker.rs`, `handle_bulk_insert.rs`, `region_request.rs`.

* feat/bulk-insert:
 **Enhance Error Handling and Add Unit Tests**

 - Improved error handling in `record_batch_to_rows` function within `handle_bulk_insert.rs` by returning `Result` and handling errors with `context`.
 - Added unit tests for `region_metadata_to_column_schema` and `record_batch_to_rows` functions in `handle_bulk_insert.rs` to ensure correct functionality and error handling.

* chore: update proto version

* feat/bulk-insert:
 - **Refactor Error Handling**: Updated error handling in `error.rs` by modifying the `ConvertDataType` error handling.
 - **Improve Logging and Error Reporting**: Enhanced logging and error reporting in `worker.rs` by adding error messages for missing region metadata.
 - **Add New Error Type**: Introduced `DecodeArrowIpc` error in `metadata.rs` to handle Arrow IPC decoding failures.
 - **Handle Arrow IPC Decoding**: Updated `region_request.rs` to handle Arrow IPC decoding errors using the new `DecodeArrowIpc` error type.

* chore: update proto version

* feat/bulk-insert:
 Refactor `handle_bulk_insert.rs` to simplify row construction

 - Removed the mutable `current_row` vector and refactored `row_at` function to return a new vector directly.
 - Updated `record_batch_to_rows` to utilize the refactored `row_at` function for constructing rows.

* feat/bulk-insert:
 ### Commit Summary

 **Enhancements in Region Server Request Handling**

 - Updated `region_server.rs` to include `RegionRequest::BulkInserts(_)` in the `RegionChange::Ingest` category, improving the handling of bulk insert operations.
 - Refined the categorization of region requests to ensure accurate mapping to `RegionChange` actions.

src/datanode/src/region_server.rs

@@ -902,7 +902,9 @@ impl RegionServerInner {
                 RegionChange::Register(attribute)
             }
             RegionRequest::Close(_) | RegionRequest::Drop(_) => RegionChange::Deregisters,
-            RegionRequest::Put(_) | RegionRequest::Delete(_) => RegionChange::Ingest,
+            RegionRequest::Put(_) | RegionRequest::Delete(_) | RegionRequest::BulkInserts(_) => {
+                RegionChange::Ingest
+            }
             RegionRequest::Alter(_)
             | RegionRequest::Flush(_)
             | RegionRequest::Compact(_)