docs: add TSDoc for payment processor + generate docs (#5917)

* added tsdocs for payment processor

* generated reference for payment processor

www/apps/docs/src/utils/decode-str.ts

@@ -0,0 +1,8 @@
+export default function decodeStr(str: string) {
+  return str
+    .replaceAll("&#60;", "<")
+    .replaceAll("&#123;", "{")
+    .replaceAll("&#125;", "}")
+    .replaceAll("&#62;", ">")
+    .replaceAll("\\|", "|")
+}