feat: Add image pull secrect support for python src

[lcgash]

What changes were proposed in this pull request?

add image pull secret config for workflow

Why are the changes needed?

because our project need pull image from private hub

Does this PR introduce any user-facing change?

i think no.it was a new feature.

How was this patch tested?

add one unit test and our project use this code to pull image

[merlintang]

@lcgash thanks for your contribution, can you fix the type issue at first?

[merlintang]

@lcgash can you update your pr description as well?

What changes were proposed in this pull request? Why are the changes needed? Does this PR introduce any user-facing change? How was this patch tested?

[merlintang]

pre-commit run --all @lcgash pls run precommit to help you to fix the format issue. sorry about this link error https://github.com/couler-proj/couler/blob/master/CONTRIBUTING.md#run-sanity-checks

[lcgash]

https://yuque.antfin.com/aii/kubemaker/mz5myx @lcgash pls run precommit to help you to fix the format issue sorry , i can not access it

[lcgash]

pre-commit run --all @lcgash pls run precommit to help you to fix the format issue. sorry about this link error https://github.com/couler-proj/couler/blob/master/CONTRIBUTING.md#run-sanity-checks

i got

[lcgash]

pre-commit run --all @lcgash pls run precommit to help you to fix the format issue. sorry about this link error https://github.com/couler-proj/couler/blob/master/CONTRIBUTING.md#run-sanity-checks

it seems look ok. please review, thanks

[merlintang]

thanks @lcgash for your contribution. can you also send a pr to add your organization to the adopter of couler. https://github.com/couler-proj/couler/blob/master/ADOPTERS.md