[refactor](file-system)(step-1) refactor file sysmte on BE and remove storage_backend (#17586)

See #17764 for details
I have tested:
- Unit test for local/s3/hdfs/broker file system: be/test/io/fs/file_system_test.cpp
- Outfile to local/s3/hdfs/broker.
- Load from local/s3/hdfs/broker.
- Query file on local/s3/hdfs/broker file system, with table value function and catalog.
- Backup/Restore with local/s3/hdfs/broker file system

Not test:
- cold & host data separation case.

be/src/http/web_page_handler.cpp

@@ -30,7 +30,6 @@
 #include "http/http_response.h"
 #include "http/http_status.h"
 #include "http/utils.h"
-#include "olap/file_helper.h"
 #include "util/cpu_info.h"
 #include "util/debug_util.h"
 #include "util/disk_info.h"