[feat req] xz/7z support for compression for slow connections on Self-Hosted Runner

[devizer]

What would you like to be added?

In Addition to the first reason from the title:

1. Slow connections on Self-Hosted Runner

Another reason is:
2) Slow connection in some regions. Even with a gigabit connection, the routing speed to GitHub Actions artifacts is only 1–2 Mbps.

for xz compression there is proven soltion equals to 7z -ms=on -mqs=on options to singificantly reduce archive size: Get-Files-In-Optimal-Order-For-Solid-Archive. I'm using this for maximum xz-compression, utilizing all the CPU cores:

Get-Files-In-Optimal-Order-For-Solid-Archive "$folder" | tar -c -f - --no-recursion -T - | 7z a dummy -txz -mmt=$(nproc) -mx=$COMPRESSION_LEVEL -si -so > /path-to-xz-archive.tar.xz

source: https://devizer.github.io/DevOps-Library.sh, depends on pure perl 5.8+ without perl libraries.

Why is this needed?

In Addition to the first reason from the title: 1) Slow connections on Self-Hosted Runner
Another reason is 2) Slow connection in some regions. Even with a gigabit connection, the routing speed to GitHub Actions artifacts is only 1–2 Mbps.