feat: Added MD5 check after migration

[abyss-w]

Added MD5 check after migration

The global configuration file has the following additions:

type: copy

check_md5: ture # Added global configuration, default is false

source:
  type: filelist
  path: /path/to/source
  options:
    list_path: /path/to/list

destination:
  type: qingstor
  path: /path/to/destination
  options:
    protocol: https
    host: qsstor.com
    port: 443
    bucket_name: example_bucket
    access_key_id: example_access_key_id
    secret_access_key: example_secret_access_key