feat(vm): add jit support

[leap0x7b]

Adds basic JIT support to the VM using sljit, which should theoretically improves performance on some platforms. Works fine on Linux/GLFW and haven't encountered any noticeable problems so far. Couldn't test on PS2 since I can't figure out how to make an ISO for it though since sljit has support for MIPS, it did compile without any problems.

[MrPowerGamerBR]

If you want to build the PlayStation 2 ISO, what I recommend doing is this:

1. Build the Butterscotch ELF file with this Instructions to compile newest code for ps2? #3
2. Generate the preprocessed files with https://butterscotch.mrpowergamerbr.com/
3. Create a new folder, put ALL the files from the generated ISO in there
4. Delete the BUTR_000.00 from the original ISO
5. Copy your Butterscotch ELF to the folder and rename it to BUTR_000.00
6. Create a new ISO with mkisofs -o Butterscotch.iso -V "UNDERTALE" -sysid "PLAYSTATION" -no-pad -D -l PathToTheISO/

In the future I do plan to open source the preprocessor tool itself (it has a Kotlin/JS version (which is the one hosted on Butterscotch's website) AND it also has a Kotlin/JVM CLI version)

[leap0x7b]

The JIT seems to work on PCSX2. I couldn't really confirm since it's running on an emulator on my slow and aging laptop though Undertale did perform slightly better with JIT and runs at slightly more consistent 30fps. I did encounter some crashes during the Asriel battle though I don't know if it's because of my JIT code or something else and if those crashes also happen on non-JIT as well.

I don't have a real PS2 so it would be really appreciated if someone who has one tested my changes. My neighbor has one though I don't think they would be willing to borrow or give it to me. I have enough money on my wallet to buy a PS2 on an online marketplace though I was saving for a new laptop so I'm not sure if I should buy it or not (+ my parents are very strict so I don't even know if they will even approve of my purchases)

[MrPowerGamerBR]

I've tested it on PCSX2 with the latest Butterscotch version + SURVEY_PROGRAM's Jevil fight, but it seems that for some reason it did not provide any meaningful differences (before it was running at 4 FPS, after it was... still running at 4 FPS)

I wonder if something is going wrong for it to not be working