fix: Sets limit to tag set count to 10 for PutObjectTagging and 50 for PutBucketTagging

Fixes #1204
Fixes #1205

Tag count in `PutBucketTagging` and `PutObjectTagging` is limited.
`PutBucketTagging`: 50
`PutObjectTagging`: 10

Adds the changes to return errors respectively

s3err/s3err.go

@@ -85,6 +85,8 @@ const (
 	ErrInvalidCopySource
 	ErrInvalidCopySourceRange
 	ErrInvalidTag
+	ErrBucketTaggingLimited
+	ErrObjectTaggingLimited
 	ErrAuthHeaderEmpty
 	ErrSignatureVersionNotSupported
 	ErrMalformedPOSTRequest
@@ -311,6 +313,16 @@ var errorCodeResponse = map[ErrorCode]APIError{
 		Description:    "The Tag value you have provided is invalid",
 		HTTPStatusCode: http.StatusBadRequest,
 	},
+	ErrBucketTaggingLimited: {
+		Code:           "BadRequest",
+		Description:    "Bucket tag count cannot be greater than 50",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrObjectTaggingLimited: {
+		Code:           "BadRequest",
+		Description:    "Object tags cannot be greater than 10",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
 	ErrMalformedXML: {
 		Code:           "MalformedXML",
 		Description:    "The XML you provided was not well-formed or did not validate against our published schema.",