Add better auth level to Azure's function

Feature Spec

Currently, the function's auth level is "anonymous", which means everyone can invoke it, we need to limit that down.
https://learn.microsoft.com/en-us/azure/azure-functions/functions-bindings-http-webhook-trigger?tabs=python-v2%2Cisolated-process%2Cnodejs-v3%2Cfunctionsv2&pivots=programming-language-javascript#http-auth

https://github.com/winglang/wing/blob/b684cfd371672fdf2ff4acd9e7c4bf74df1ecd8d/libs/wingsdk/src/target-tf-azure/function.ts#L105

Use Cases

authentication and security

Implementation Notes

please wait until this is merged.

Component

SDK

Community Notes

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Start with libs/wingsdk/src/target-tf-azure/function.ts around line 105 and the Azure HTTP trigger authentication documentation. Check issue 1371 first, since the implementation notes say to wait for it to merge. The final auth level and acceptance criteria still need to be defined before this is done.