[Feature] Feature to allow EJS to access dynamic cheats folder

[joefok]

**Is your feature request related to a problem?
No, thanks.

Describe the solution you'd like
https://emulatorjs.org/docs4devs/dynamic-cheat-codes/
When load up the game, EJS will find if dynamic cheat variables is existed, romm could provide folder of console.json file that contain list of cheats code.
window.EJS_cheatPath = "/emulatorjs/cheats/";
Current this variable is not existed.

Describe alternatives you've considered
Add sample json file that allow easier to follow.
Example: nes.json
{
"Super Mario Bros.": [
{ "desc": "Super jump", "code": "TPZLTG" },
{ "desc": "Mega-jump", "code": "APZLGG" }
],
"The Legend of Zelda": [
{ "desc": "Infinite Health", "code": "SZLZZZ" }
]
}

Additional context
Add any other context or screenshots about the feature request here.
EmulatorJS/EmulatorJS#1122