[Suggestion] Manage accounts

## System Info
|Info|Value|
|---|---|
|Instance|United Gaming EU|
|User|RAM (18)|
|URI|/bank-accounts|

## Description
When it comes to adding money or taking away it would be nice to have the function to put a value in and then add or subtract based on that. Also if we are investigating funds having the ability to create a secondary account for that person but locking access
