[Codegen/Typespec] Formatting errors in the generated code

[HarshaNalluru]

Observed formatting errors in the generated code while working on monitor-ingestion library Azure/azure-sdk-for-js#35151

Azure/azure-sdk-for-js@7a21fbf

Preview below

[qiaozha]

Is this for tsp-client?

[HarshaNalluru]

@qiaozha yes

[MaryGao]

I would prioritize this as p1 considering we can easily fix this with run a command. And also we plan to switch DPG generation to use our automation also, which includes additional steps to format.

[MaryGao]

We need to adjust the priority because in devinner loop we don't have automation tool and it's better to guarantee the generated code are well formatted

[JialinHuang803]

Formatting rules in this repo: lib.ts

Formatting rules in sdk repo: .prettierrc.json