tflite: intel: Parse model cache options from TFLiteSettings

BUG=b:344503269,b:343626256
TEST=Update /etc/tflite/settings.json and check the verbose log

Change-Id: Ic29061e79a7ae4c2436256785fb3b4721cc146d6
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/tflite/+/5678274
Commit-Queue: Shik Chen <shik@chromium.org>
Tested-by: Shik Chen <shik@chromium.org>
Reviewed-by: Ching-Kang Yen <chingkang@chromium.org>