[Question] Should SharedKeyCredential be included in azidentity?

[ambientlight]

Feature Request

In addition to AAD authentication, Azure Maps supports Shared Key Authentication like:

import (
    "github.com/Azure/azure-sdk-for-go/sdk/azcore"
)

type SharedKeyCredential struct {
    SubscriptionKey string
}

func (creds SharedKeyCredential) AuthenticationPolicy(options azcore.AuthenticationPolicyOptions) azcore.Policy {
    return azcore.PolicyFunc(func(req *azcore.Request) (*azcore.Response, error) {
        q := req.URL.Query()
        q.Add("subscription-key", creds.SubscriptionKey)
        req.URL.RawQuery = q.Encode()
        return req.Next()
    })
}

I haven't found such policy in sdk/azidentity/. Should something like above (probably with query parameter name also parametrizable) be included in azidentity module, or we should include it alongside our generated clients like in https://github.com/ambientlight/azure-sdk-for-go/commit/878a016305e8b4e2a89206ef5a0595d230bb2bc1 ?

[jhendrixMSFT]

The way it was explained to me is that azidentity is all about acquiring token credentials, so things like shared key are excluded. Also, are all shared key implementations uniform? My limited understanding is no.

For reference, azblob includes its own SharedKeyCredential here.

CC @schaabs