yet another fine system monitor

Glances is a very nice system monitor. I find it strikes an optimal balance between density and legibility, and it's my go-to monitor for watching utilization of my compute nodes etc.

However, Glances is quite slow — it usually uses about 25% of a CPU core just to display the system monitor dashboard.

This is my attempt to write yet another fine system monitor, modeled after Glances but with

• fewer features
• more bugs
• much less resource usage

It should work in fallback sysinfo mode on most platforms supported by sysinfo, crossterm, and ratatui. As soon as #2 is completed, it will be at its best on Linux, since sysinfo takes a least-common-denominator approach; I intend to support it indefinitely as a fallback, but the primary development will directly use Linux procfs.