chore: complete the payment service

pnpm-lock.yaml

@@ -86,6 +86,9 @@ importers:
       class-validator:
         specifier: ^0.14.1
         version: 0.14.1
+      decimal.js:
+        specifier: ^10.5.0
+        version: 10.5.0
       dotenv:
         specifier: ^16.4.7
         version: 16.4.7
@@ -2277,6 +2280,9 @@ packages:
       supports-color:
         optional: true
 
+  decimal.js@10.5.0:
+    resolution: {integrity: sha512-8vDa8Qxvr/+d94hSh5P3IJwI5t8/c0KsMp+g8bNw9cY2icONa5aPfvKeieW1WlG0WQYwwhJ7mjui2xtiePQSXw==}
+
   dedent@1.5.3:
     resolution: {integrity: sha512-NHQtfOOW68WD8lgypbLA5oT+Bt0xXJhiYvoR6SmmNXZfpzOGXwdKWmcwG8N7PwVVWV3eF/68nmD9BaJSsTBhyQ==}
     peerDependencies:
@@ -8316,6 +8322,8 @@ snapshots:
     dependencies:
       ms: 2.1.3
 
+  decimal.js@10.5.0: {}
+
   dedent@1.5.3: {}
 
   deep-extend@0.6.0: