Add functionality to create transactions

- Transactions work against the account balance
- Needs helper functions for users
- Needs more testing

utilities/recordHelper.js

@@ -69,4 +69,31 @@ exports.RSSPostRecord = class RSSPostRecord extends baseRSSRecord{
         super(_id, _title, _link, _category);
         this.guid = _guid;
     }    
-}
+}
+
+/**
+ * Base transaction 
+ */
+class BaseTransaction {
+    constructor(_provider_transaction_id, _account_id, _discord_tokens_used, _provider_tokens_used, _provider_id) {
+        this.transaction_id = _provider_transaction_id;
+        this.account_id = _account_id;
+        this.discord_tokens_used = _discord_tokens_used;
+        this.provider_tokens_used = _provider_tokens_used;
+        this.provider_id = _provider_id;
+    }    
+}
+
+exports.BaseTransaction = BaseTransaction;
+
+/**
+ * Base transaction 
+ */
+class BaseUserAccount {
+    constructor(_discord_account_id, _account_id) {
+        this.discord_account_id = _discord_account_id;
+        this.account_id = _account_id;
+    }
+}
+
+exports.BaseUserAccount = BaseUserAccount;