feat: implement prefix-level versioning exclusion (#14828)

Spark/Hadoop workloads which use Hadoop MR 
Committer v1/v2 algorithm upload objects to a 
temporary prefix in a bucket. These objects are 
'renamed' to a different prefix on Job commit. 
Object storage admins are forced to configure 
separate ILM policies to expire these objects 
and their versions to reclaim space.

Our solution:

This can be avoided by simply marking objects 
under these prefixes to be excluded from versioning, 
as shown below. Consequently, these objects are 
excluded from replication, and don't require ILM 
policies to prune unnecessary versions.

-  MinIO Extension to Bucket Version Configuration
```xml
<VersioningConfiguration xmlns="http://s3.amazonaws.com/doc/2006-03-01/"> 
        <Status>Enabled</Status>
        <ExcludeFolders>true</ExcludeFolders>
        <ExcludedPrefixes>
          <Prefix>app1-jobs/*/_temporary/</Prefix>
        </ExcludedPrefixes>
        <ExcludedPrefixes>
          <Prefix>app2-jobs/*/__magic/</Prefix>
        </ExcludedPrefixes>

        <!-- .. up to 10 prefixes in all -->     
</VersioningConfiguration>
```
Note: `ExcludeFolders` excludes all folders in a bucket 
from versioning. This is required to prevent the parent 
folders from accumulating delete markers, especially
those which are shared across spark workloads 
spanning projects/teams.

- To enable version exclusion on a list of prefixes

```
mc version enable --excluded-prefixes "app1-jobs/*/_temporary/,app2-jobs/*/_magic," --exclude-prefix-marker myminio/test
```

cmd/bucket-metadata-sys.go

@@ -196,7 +196,7 @@ func (sys *BucketMetadataSys) Get(bucket string) (BucketMetadata, error) {
 func (sys *BucketMetadataSys) GetVersioningConfig(bucket string) (*versioning.Versioning, error) {
 	meta, err := sys.GetConfig(GlobalContext, bucket)
 	if err != nil {
-		return nil, err
+		return &versioning.Versioning{}, err
 	}
 	return meta.versioningConfig, nil
 }