Better to support API invoking when using Serverless LLM

[samchen8008]

/kind feature

Describe the solution you'd like

1. Login CSGHub and instantiate one serverless LLM like Deepseek
2. There is one place in UI where I can see the API can invoke outside of CSGHub

Anything else you would like to add:
[Miscellaneous information that will assist in solving the issue.]

Links to the design documents or others:

[samchen8008]

@KinglyWayne @chhao pls get this feature in next release backlog

[jialudev]

/kind feature

Describe the solution you'd like

1. Login CSGHub and instantiate one serverless LLM like Deepseek
2. There is one place in UI where I can see the API can invoke outside of CSGHub

Anything else you would like to add: [Miscellaneous information that will assist in solving the issue.]

Links to the design documents or others:

Thank you for your suggestion. We will discuss and work on implementing this feature as soon as possible.

[jialudev]

gitlab-issue-361

[youngbeom-shin]

#1027

As this feature has been successfully implemented and released, we are closing this issue. Thank you for your contribution. @ymh6315431