Increase the transaction cost — Stock:Retail investors Steam update #482361

Now individual investors have to pay the service fee of the platform and the stamp tax of the country when trading. When buying, a 1% handling fee is paid, and when selling, a 1% stamp tax is paid. The expense statistics will be displayed when the list statistics are fully launched. If you have any opinions on the transaction expenses, please let me know. The transaction simulation values have been modified to slightly reduce the degree of market turmoil and broaden the scope of the simulated transaction so that the indicator of the buy-sell ratio is not so sensitive.