Finalize submission v4.1

[anhappdev]

• 1. make sure this app works well (check the app log directory, @RSMNYS )
• 2. verify tflite files are the same with what @AhmedTElthakeb provided (https://github.com/mlcommons/mobile_model_closed/releases/tag/alpha-tflite-v0.3)
• 3. after we merge this, add tflite files, .ts, files to both the mobile_models file and the CloudFlare bucket (@anhappdev)
• 4. add .pickle and tflite files to the mobile_open repo (https://github.com/mlcommons/mobile_open/releases). @anhappdev
• 5. 5.0 submission branch
• if the qualcomm backend failed to load, it blocked there (instead of trying other backends). (qti backend blocking other backends fix #961)

Originally posted by @freedomtan in #928 (comment)

[anhappdev]

@AhmedTElthakeb Can you please provide the SHA256 checksum of the files in
https://github.com/mlcommons/mobile_model_closed/releases/tag/alpha-tflite-v0.3
for verification purpose.
The files are uploaded here:
https://github.com/mlcommons/mobile_open/releases/tag/v4.1-sd-tflite