chore(oas): explicitly declare type:object on schemas with properties (#2712)

### What

OAS: Explicitly declare type:object on schemas with properties.

### Why

While not officially required, schemas with properties should have their type explicitly declared as "object". Omitting the type translates to type: any with properties XYZ. The ambiguity can lead to issues when using code generators.

### How

Multiple regex searches to identify schemas missing type: object. Manually edit each schema. Spot check generated OAS.

### Testing
- Ran OAS validator.
- Ran docs build script

### Proof
![Screen Shot 2022-12-01 at 1 46 13 PM](https://user-images.githubusercontent.com/116003638/205137671-7a6770dd-4f9b-456c-99a6-ac654f6d0f59.png)


RESOLVES CORE-847

packages/medusa/src/api/routes/admin/draft-orders/create-draft-order.ts

@@ -33,6 +33,7 @@ import { IsType } from "../../../../utils/validators/is-type"
  *   content:
  *     application/json:
  *       schema:
+ *         type: object
  *         required:
  *           - email
  *           - items
@@ -175,6 +176,7 @@ import { IsType } from "../../../../utils/validators/is-type"
  *     content:
  *       application/json:
  *         schema:
+ *           type: object
  *           properties:
  *             draft_order:
  *               $ref: "#/components/schemas/draft-order"

packages/medusa/src/api/routes/admin/draft-orders/create-line-item.ts

@@ -26,6 +26,7 @@ import { validator } from "../../../../utils/validator"
  *   content:
  *     application/json:
  *       schema:
+ *         type: object
  *         required:
  *           - quantity
  *         properties:
@@ -78,6 +79,7 @@ import { validator } from "../../../../utils/validator"
  *     content:
  *       application/json:
  *         schema:
+ *           type: object
  *           properties:
  *             draft_order:
  *               $ref: "#/components/schemas/draft-order"

packages/medusa/src/api/routes/admin/draft-orders/delete-draft-order.ts

@@ -35,6 +35,7 @@ import { EntityManager } from "typeorm"
  *     content:
  *       application/json:
  *         schema:
+ *           type: object
  *           properties:
  *             id:
  *               type: string

packages/medusa/src/api/routes/admin/draft-orders/delete-line-item.ts

@@ -45,6 +45,7 @@ import { MedusaError } from "medusa-core-utils"
  *     content:
  *       application/json:
  *         schema:
+ *           type: object
  *           properties:
  *             draft_order:
  *               $ref: "#/components/schemas/draft-order"

packages/medusa/src/api/routes/admin/draft-orders/get-draft-order.ts

@@ -42,6 +42,7 @@ import { DraftOrder } from "../../../.."
  *     content:
  *       application/json:
  *         schema:
+ *           type: object
  *           properties:
  *             draft_order:
  *               $ref: "#/components/schemas/draft-order"

packages/medusa/src/api/routes/admin/draft-orders/list-draft-orders.ts

@@ -48,6 +48,7 @@ import { validator } from "../../../../utils/validator"
  *     content:
  *       application/json:
  *         schema:
+ *           type: object
  *           properties:
  *             draft_orders:
  *               type: array

packages/medusa/src/api/routes/admin/draft-orders/register-payment.ts

@@ -46,6 +46,7 @@ import { EntityManager } from "typeorm"
  *     content:
  *       application/json:
  *         schema:
+ *           type: object
  *           properties:
  *             order:
  *               $ref: "#/components/schemas/draft-order"

packages/medusa/src/api/routes/admin/draft-orders/update-draft-order.ts

@@ -31,6 +31,7 @@ import { IsType } from "../../../../utils/validators/is-type"
  *   content:
  *     application/json:
  *       schema:
+ *         type: object
  *         properties:
  *           region_id:
  *             type: string
@@ -105,6 +106,7 @@ import { IsType } from "../../../../utils/validators/is-type"
  *     content:
  *       application/json:
  *         schema:
+ *           type: object
  *           properties:
  *             draft_order:
  *               $ref: "#/components/schemas/draft-order"

packages/medusa/src/api/routes/admin/draft-orders/update-line-item.ts

@@ -25,6 +25,7 @@ import { validator } from "../../../../utils/validator"
  *   content:
  *     application/json:
  *       schema:
+ *         type: object
  *         properties:
  *           unit_price:
  *             description: The potential custom price of the item.
@@ -71,6 +72,7 @@ import { validator } from "../../../../utils/validator"
  *     content:
  *       application/json:
  *         schema:
+ *           type: object
  *           properties:
  *             draft_order:
  *               $ref: "#/components/schemas/draft-order"