Refactor/cleanup errors (#179)

* error refactored: moved to thiserror
* Result type alias for better ergonomics:
* removed field from MinioErrorCode::BucketNotEmpty enum
* made field private of MinioErrorResponse
* updated XmlError
* simplified calling errors
* bumped toolchain channel form 1.86.0 to 1.87.0
* bumped toolchain channel form 1.87.0 to 1.88.0 due to clippy fixes that are not compatible with 1.87.0

tests/test_bucket_versioning.rs

@@ -15,7 +15,8 @@
 
 use minio::s3::builders::VersioningStatus;
 use minio::s3::client::DEFAULT_REGION;
-use minio::s3::error::{Error, ErrorCode};
+use minio::s3::error::{Error, S3ServerError};
+use minio::s3::minio_error_response::MinioErrorCode;
 use minio::s3::response::a_response_traits::{HasBucket, HasRegion};
 use minio::s3::response::{GetBucketVersioningResponse, PutBucketVersioningResponse};
 use minio::s3::types::S3Api;
@@ -73,14 +74,18 @@ async fn bucket_versioning_s3express(ctx: TestContext, bucket_name: String) {
         .send()
         .await;
     match resp {
-        Err(Error::S3Error(e)) => assert_eq!(e.code, ErrorCode::NotSupported),
-        v => panic!("Expected error S3Error(NotSupported): but got {:?}", v),
+        Err(Error::S3Server(S3ServerError::S3Error(e))) => {
+            assert_eq!(e.code(), MinioErrorCode::NotSupported)
+        }
+        v => panic!("Expected error S3Error(NotSupported): but got {v:?}"),
     }
 
     let resp: Result<GetBucketVersioningResponse, Error> =
         ctx.client.get_bucket_versioning(&bucket_name).send().await;
     match resp {
-        Err(Error::S3Error(e)) => assert_eq!(e.code, ErrorCode::NotSupported),
-        v => panic!("Expected error S3Error(NotSupported): but got {:?}", v),
+        Err(Error::S3Server(S3ServerError::S3Error(e))) => {
+            assert_eq!(e.code(), MinioErrorCode::NotSupported)
+        }
+        v => panic!("Expected error S3Error(NotSupported): but got {v:?}"),
     }
 }