[Feature] ZRam activation script

[CRCaue]

Hey there!

I've been trying to optimize PS1 games in the latest version of ArkOS-R3XS, and I think ZRam finally may show its worth.

I'm using CTR as test sample, running it after converting BIN/CUE image to CHD. I was able to squeeze performance from Retroarch with multiple settings (Even reducing the Audio Re-sampler quality helped), but maybe the main strat here is to Pre-Load the image file to memory.

My device is a R36S bought recently (Two weeks ago) from BOYHOM official store. It has the two RAM chips on the PCB, and Retroarch states that the memory is around 890 MB. The main board lists version 21, from December 18th, 2024.

CTR's CHD has 310.560 KB of size. Trying to preload it, I got an error in Retroarch. Maybe it is possible to improve RAM usage with ZRam, as other users reported improvements in low-end Linux builds. Preloading the image file should improve overall speed, as we know that CPU->RAM communication is faster than CPU->HDD/SDD.

I'm currently trying to activate ZRam in my R36S to check if this would help PS1 emulation in any way and I would appreciate any help on how to do this. I'm currently checking the folder structure to try and get how it works. I'll gladly report back if I get good results on it. I know that most, if not all, Raspberry Pi Batocera builds use ZRam and get great results from it.

I'm not sure if it helps, but I was able to get the ZRam script used in the latest Batocera build (Which is the script I'm trying to apply to ArkOS-R3XS). Please let me know if I should add it here.

Thank you all for the great work!