I saw a similar script on the site, its author andre500. But I decided to make almost the same script from scratch, because not all users have a clean GTA and they would not want to change the contents of the data folder, which can lead to a game crash.
Now about the fashion itself. You can get a job as a miner in a mine not far from Mount Chiliad. And work around the clock. Get large stones in which there are a lot of gold reserves. You will receive a different amount of money for one stone.
Setting: Throw the contents into the CLEO folder
It is forbidden to publish the script on other sites without the permission of the author. Author's page in VK http://vk.com/id211631861