Sys get ip

[hulto]

What type of PR is this?

/kind feature
/kind eldritch-function

What this PR does / why we need it:

Adds the ability to list ip information on a system.

Which issue(s) this PR fixes:

[codecov]

Codecov Report

Merging #228 (cc9bea4) into main (324b363) will increase coverage by 0.24%.
The diff coverage is 94.73%.

@@            Coverage Diff             @@
##             main     #228      +/-   ##
==========================================
+ Coverage   73.85%   74.09%   +0.24%     
==========================================
  Files          82       83       +1     
  Lines        4750     4806      +56     
==========================================
+ Hits         3508     3561      +53     
- Misses       1156     1159       +3     
  Partials       86       86              

Impacted Files	Coverage Δ
implants/lib/eldritch/src/sys.rs	57.14% <50.00%> (-0.64%)	⬇️
implants/lib/eldritch/src/sys/get_ip_impl.rs	98.07% <98.07%> (ø)
implants/lib/eldritch/src/lib.rs	92.22% <100.00%> (ø)

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[Cictrone]

slick, unsure about global var being necessary but besides that lgtm