added a route a get all camera statuses

[khavinshankar]

route:
cameras/status

body:

[
  {
    "hostname": "string",
    "port": 80 | 443,
    "username": "string",
    "password": "string"
  },
  ...
]

response:

{
  "time": "2023-07-26T11:43:32.016Z",
  "status": {
    "128.128.128.128": "up",
    ...
  }
}