[DEV-2246] Customize user agent for sample app (#4)

Set a customized user agent for the sample app.

https://circlepay.atlassian.net/browse/DEV-2246

Author: bohancircle

app/api/user/route.js

@@ -27,6 +27,7 @@ export async function POST(request) {
             headers: {
                 'Authorization': `Bearer ${process.env.CIRCLE_API_KEY}`,
                 'Content-Type': 'application/json',
+                'User-Agent': 'PW-TEST-SERVER',
             },
             body: JSON.stringify({
                 'userId': user_id,

app/api/user/token/route.js

@@ -25,6 +25,7 @@ export async function POST(request) {
         headers: {
             'Authorization': `Bearer ${process.env.CIRCLE_API_KEY}`,
             'Content-Type': 'application/json',
+            'User-Agent': 'PW-TEST-SERVER',
         },
         body: JSON.stringify({
             'userId': userId,

app/api/wallets/[walletId]/balances/route.js

@@ -31,6 +31,7 @@ export async function GET(request, params) {
                 'Authorization': `Bearer ${process.env.CIRCLE_API_KEY}`,
                 'Content-Type': 'application/json',
                 'X-User-Token': userTokenFromHeader,
+                'User-Agent': 'PW-TEST-SERVER',
             },
         });
 

app/api/wallets/route.js

@@ -30,6 +30,7 @@ export async function GET(request) {
                 'Authorization': `Bearer ${process.env.CIRCLE_API_KEY}`,
                 'Content-Type': 'application/json',
                 'X-User-Token': userTokenFromHeader,
+                'User-Agent': 'PW-TEST-SERVER',
             },
         });