update GET /contacts fetching logic

[SwarnimWalavalkar]

• updated the contacts controller to include contacts from the entire state if none are found for the requested city.
• updated the response schema as follows:

  {
  "includeState": true,
  "data": [
  {
    "status": "ACTIVE",
    "feedback": [],
    "userId": [],
    "_id": "60a15e08416a9aba812ffff5",
    "contact_no": "8369089107",
    "__v": 0,
    "address": null,
    "category": "oxygen",
    "city": "Mumbai",
    "createdAt": "2021-05-16T17:59:58.866Z",
    "created_by": "Jibrail Khan | Covid Resources | Plasma",
    "created_on": "1621927491000",
    "description": null,
    "email": null,
    "last_verified_on": null,
    "pincode": null,
    "price": null,
    "quantity_available": null,
    "resource_type": "Oxygen Cylinder",
    "review_comment": null,
    "source_link": "https://twitter.com/TheJibrailKhan/status/1397091275187183616",
    "state": "Maharashtra",
    "title": "Oxygen Cylinder in Mumbai",
    "updatedAt": "2021-05-25T07:35:00.756Z",
    "verification_status": null,
    "verified_by": null
  },
  ...
     ]
  }