…ription (#810)

Introduce a new `azure.subscription` resource:
```
cnquery> azure.subscription{name state}
azure.subscription: {
  name: "Mondoo Testing"
  state: "Enabled"
}
```

All the resources are now moved from `azure.*` to
`azure.subscription.*`. This lets us build a resource hierarchy more
clearly. Before:
```

cnquery> azure.compute.vms{name}
azure.compute.vms: [
  0: {
    name: "Security-Team-vm-linux-1-b9qa"
  }
  1: {
    name: "Security-Team-vm-linux-1-mjau"
  }
]
```

After:
```
cnuery> azure.subscription.compute.vms{name}
azure.subscription.compute.vms: [
  0: {
    name: "Security-Team-vm-linux-1-b9qa"
  }
  1: {
    name: "Security-Team-vm-linux-1-mjau"
  }
]
```


There are aliases introduced to keep the old resources untouched to
avoid breaking changes so `azure.compute.vms` will still work