Support Custom Model Import

[didhd]

Is your feature request related to a problem? Please describe.
Current Converse API does not support Custom Model Import feature.

Describe the feature you'd like
Support InvokeModel API.

Additional context

[daixba]

Thanks for raising this request.

This repo was originally built using InvokeModel api, and then changed to Converse API later.

Currently, there is no plan to reverse this change back (or add support of InvokeModel api), if needed, please do custom build based on this repo, you can find the InvokeModel api implemention from earlier commits (git history)

For long term, we will wait for the support via Converse API.

Thanks.