Please Document what is required for the Code + Test pane to work


Please put the actual minimum permissions to get this to work -- this is extremly frustrating -- granting my devs contributor access to just test a function is nuts.

These are the perms i set and if some arent in there it sort of works but obviously wont run the function.

```json
{
"id": "",
"properties": {
"roleName": "Azure Func Exector",
"description": "V2",
"assignableScopes": [

],
"permissions": [
{
"actions": [
"microsoft.web/sites/functions/action",
"microsoft.web/sites/functions/delete",
"microsoft.web/sites/functions/listsecrets/action",
"microsoft.web/sites/functions/read",
"microsoft.web/sites/functions/write",
"microsoft.web/sites/functions/masterkey/read",
"microsoft.web/sites/functions/token/read",
"Microsoft.Web/sites/config/list/Action",
"microsoft.web/sites/host/sync/action",
"microsoft.web/sites/host/listkeys/action",
"microsoft.web/sites/functions/listkeys/action"
],
"notActions": [],
"dataActions": [],
"notDataActions": []
}
]
}
}
```