* ams_mitm: add ability to mirror bluetooth device pairing database to sd card via a system setting

* ams_mitm: address requested stylistic changes

* ams_mitm: make use of R_SUCCEED macro

* ams_mitm: use settings::BluetoothDevicesSettings instead of libnx type

* ams_mitm: fix logic error when truncating pairing database on read

* Update .ini comment

* ams_mitm: missing R_TRY around call to fs::FlushFile

* stratosphere: remove union from BluetoothDevicesSettings type

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Co-authored-by: ndeadly <24677491+ndeadly@users.noreply.github.com>