Create method for fetching card limits (#3) (#82)

Thanks!

Author: luoyang9

resources/cards.ts

@@ -1,4 +1,4 @@
-import { Card, CreateDebitCardRequest, PinStatus, ReplaceCardRequest } from "../types/cards"
+import { Card, CardLimits, CreateDebitCardRequest, PinStatus, ReplaceCardRequest } from "../types/cards"
 import { Include, UnitConfig, UnitResponse } from "../types/common"
 import { Customer } from "../types/customer"
 import { Account } from "../types/account"
@@ -72,6 +72,10 @@ export class Cards extends BaseResource {
 
         return await this.httpGet<UnitResponse<PinStatus>>(path)
     }
+    
+    public async limits(id: string) : Promise<UnitResponse<CardLimits>> {
+        return this.httpGet<UnitResponse<CardLimits>>(`/${id}/limits`)
+    }
 }
 
 export interface CardListParams {

types/cards.ts

@@ -525,4 +525,27 @@ export interface PinStatus {
     attributes: {
         status: "Set" | "NotSet"
     }
-}
+}
+
+export interface CardLimits {
+    type: "limits"
+
+    attributes: {
+        limits: {
+            dailyWithdrawal: number
+            dailyPurchase: number
+            monthlyWithdrawal: number
+            monthlyPurchase: number
+        }
+        dailyTotals: {
+            withdrawals: number
+            deposits: number
+            purchases: number
+        }
+        monthlyTotals: {
+            withdrawals: number
+            deposits: number
+            purchases: number
+        }
+    }
+}