Guests API

/guests/create/<name> - Creates a guest with the provided configuration
- Method: POST
- Request Body:
```
{
    "arch": "i386",
    "memory": 512
}
```
/guests/list - Lists all the guest names mapped to their ID
- Method: GET
- Response Body:
```
[
    {"guest-a": 1 },
    {"guest-b2": 2 }
]
```
/guests/remove/<id>- Remove a guest configuration
- Method: DELETE
/guests/start/<id> - Start a guest
- Method: POST
/guests/stop/<id> - Stop a guest
- Method: POST