added vendors table

lib/helper/fetchVendors.ts

@@ -0,0 +1,21 @@
+// lib/helper/fetchVendors.ts
+import { Vendor } from '@prisma/client'
+
+export interface VendorWithAddress extends Vendor {
+    address: {
+        street: string
+        city: string
+        state: string
+        zip: number
+    }
+}
+
+export async function fetchVendorsClient(): Promise<VendorWithAddress[]> {
+    const res = await fetch('/api/vendors/fetch')
+    
+    if (!res.ok) {
+        throw new Error('Failed to fetch vendors')
+    }
+    
+    return res.json()
+}