Add option to increase the size of cache to improve performance and use less cpu resources on our old mechanical HHDs

[trimechee]

Hello, I notice it by opening the 2 web browsers, R3dfox opens in the blink of an eye in my old eee pc, while Thorium-Legacy takes more time to open and the eee pc freezes for a while, I investigated and this difference in speed and impression of lightness comes from the fact that firefox made the good intelligent decision to increase the default cache size from 200mb to 1000mb (1 Gb), which is reflected in the speed of the web browser especially in our old laptops which have a mechanical HDD, while chromium seems optimized more for modern fast SSD and the default cache size of Thorium-Legacy does not exceed 300mb which is sad because it slows down performance on our mechanical HDD, I tried this command line with Supermium :

--disk-cache-size=1147483647

to increase the default cache size of supermium to 1GB, but I go to the history section and click clear history and I see the cache size of Thorium-Legacy which remains fixed at 200 MB or 300 MB even with this comand line , so the command --disk-cache-size=1147483647 is not compatible with Thorium-Legacy and we hope please an easy quick option to increase the default cache of Thorium-Legacy to 1Gb, or maybe our beloved Thorium-Legacy should to differentiate itself from chrome's decisions and increase the default cache size to 1Gb as is the case for firefox, thank you!

let's be clear, Thorium-Legacy was fast even with only 200mb cache (before sadly i uninstall it for serious bug of lags), but I feel that r3dfox is a bit lighter and speed probably because it has a large cache of 1GB by default