ChFiler: Add support for auto transfer when SG mode

[HashidaTKS]

Which issue(s) this PR fixes:

https://github.com/ThinBridge/Chronos-SG/issues/44

What this PR does / why we need it:

Add support for auto transfer when SG mode, means working on ThinApp.

• Add a config parameter EnableAutoTransfer

  • Value Type: boolean
  • 0(False)
  • 1(True)
  • Default: False

• If EnableAutoTransfer is True, Chronos automatically opens and transfers a downloaded file.

  • The downloaded file is opened and transferred when closing the donwload dialog.

• If EnableAutoTransfer is False, Chronos doesn't automatically open and transfer a downloaded file.

How to verify the fixed issue:

This change is for the SG mode, means working on ThinApp, file manager, so we can't test it only in this repository. Tests for this PR is executed with https://github.com/ThinBridge/Chronos-SG/pull/226

[HashidaTKS]

Chronosを閉じた際にChFilerが起動してしまう問題が起きている。 （ChFiler側の問題と思われる）

[HashidaTKS]

いや、違うか、Chronos側の実装が足りていない。