📄️ getStocks
This function returns all stocks (with filter)
📄️ reloadStocks
This function reload and refresh all stocks
📄️ createStock
This function creates a new stock
📄️ createCrypto
This function creates a new cryptocurrency
📄️ updateInvest
This function updates a stock/crypto price
📄️ deleteInvest
This function deletes a stock/crypto