`azdev repo add` doesn't work if directory isn't named `azure-cli-extensions`

[jonathan-innis]

While attempting to perform azdev extension create <extensionName>, I run into the following error:

(env) PS C:\Users\joinnis.REDMOND\github\azure-arc-extensions> azdev extension create k8s-config
Unable to find `azure-cli-extensions` repo. Have you cloned it and added with `azdev extension repo add`?

If I attempt to add a local git repository that doesn't have the name azure-cli-extensions the command will always fail, even if the local repo is a valid repository