feature: Allow to use HTTP other Method (GET, PUT, DELETE) to impl kserve predict protocol v2

[KimSoungRyoul]

Feature request

https://github.com/kserve/kserve/blob/master/docs/predict-api/v2/required_api.md

svc = bentoml.Service(...)

@svc.api(
    route="predict/${PATH_VARIABLE}",
    method="GET", # <----
    
)
async def predict(path_variable: str):
     ....

Motivation

No response

Other

No response

[KimSoungRyoul]

hi @frostming

I think that support other Method (as least GET) not only POST in BentoML is useful to extend BentoML

Can you include this issue in bentoml team's maelstrom or
if you're positive about this minor feature, I can make the PR

thanks