[VFS] Add support for loading ZArchive files

[rtissera]

This PR adds support for loading ZAR (ZArchive files) of a decrypted dump of XBOX 360 game.
The process is basically to dump your disc, extract files using your favorite tool, and create a ZAR file from it using ZArchive tool.
ZArchive is a format created by @Exzap for Cemu to store Wii U dumps originally (WUA files). It is very lightweight and uses modern Zstd compression.

This PR implements ZArchive supports through zstd and zarchive dependencies as third-party libraries, premake build support and full C++ VFS implementation for this specific kind of device.

I have personally tested it on around 60 games without noticing any behavior difference or performance hit between a decrypted folder and a ZAR file.

Comments, enhancements, and possible mistakes are welcome.

[dmanlfc]

This would be great for XBLA games too! Thanks @rtissera - long time no see.

[Gliniak]

-1 from me at this point.

1. Use command xb lint / xb format to fix formatting.
2. Some parts have poor readability. Lack of curly brackets after if statements and new lines causes it to be quite a hassle to read.
3. Instead of using auto everywhere try to use types that are being used in that place.
4. If you can const something - do it

[rtissera]

-1 from me at this point.

1. Use command xb lint / xb format to fix formatting.

2. Some parts have poor readability. Lack of curly brackets after if statements and new lines causes it to be quite a hassle to read.

3. Instead of using auto everywhere try to use types that are being used in that place.

4. If you can const something - do it

Okay, I will improve those points thanks for feedback.

[Razzile]

formatting seems to be messed up here

[Razzile]

please try and keep indentation and formatting of our other lua files here if possible

[jackbritchford]

@Gliniak if you're referring to the Lua code, there are no curly braces after function, just "then".
But yes, there are generally formatting / indentation issues.
I may be able to review and fix later

[rtissera]

fwiw it's been merged and improved in Xenia canary