Allow user to select where to persist Azurite data files

[jinglouMSFT]

Azurite by default persists its data files in the current working directory. It would be more flexible if we provide an option to let the user to chose where s/he wants to persist the data files. This would be valuable if the user doesn't want his/her current working directory (aka the repo) to be polluted with the test data files.

[paulyuk]

I feel pretty strongly that the current behavior is an anti pattern that leads to 1) checking your personal test data into your repos (possible security issue) 2) possible deletion of your state/data when you revert or cancel those changes. In the case of my Durable Function that invisibly writes complex state to Table storage, I got into a situation where I corrupted and deleted my state forever which was not good.

I like the idea of giving user an option, however my recommendation is we pick a user data folder outside of working directory by default to avoid this.

[nturinski]

This is controlled by Azurite, not by us. They have a setting that will be respected that the user would have to change:

I don't think I'd want to expose this setting anywhere on our UI-- I'm not really sure where a good place to display it would be.