Resolve expect crashes

[hulto]

What type of PR is this?

/kind bug

What this PR does / why we need it:

• Resolves issues eldritch usage of expect which causes the process to panic.
• Removes dangerous calls to unwrap in eldritch

Which issue(s) this PR fixes:

[codecov]

Codecov Report

Merging #311 (5446ec4) into main (e572473) will increase coverage by 0.06%.
The diff coverage is 90.66%.

@@            Coverage Diff             @@
##             main     #311      +/-   ##
==========================================
+ Coverage   74.83%   74.90%   +0.06%     
==========================================
  Files          94       94              
  Lines        6116     6112       -4     
==========================================
+ Hits         4577     4578       +1     
+ Misses       1452     1447       -5     
  Partials       87       87              

Files	Coverage Δ
implants/lib/eldritch/src/file/compress_impl.rs	88.99% <100.00%> (+0.99%)	⬆️
implants/lib/eldritch/src/file/download_impl.rs	97.82% <100.00%> (-0.22%)	⬇️
implants/lib/eldritch/src/file/list_impl.rs	94.28% <100.00%> (ø)
implants/lib/eldritch/src/file/replace_all_impl.rs	100.00% <100.00%> (ø)
implants/lib/eldritch/src/pivot/arp_scan_impl.rs	44.23% <100.00%> (+1.04%)	⬆️
implants/lib/eldritch/src/process/list_impl.rs	86.15% <100.00%> (ø)
implants/lib/eldritch/src/sys/get_ip_impl.rs	98.66% <100.00%> (ø)
implants/lib/eldritch/src/sys/get_os_impl.rs	97.22% <100.00%> (ø)
implants/lib/eldritch/src/sys/shell_impl.rs	95.87% <100.00%> (-0.13%)	⬇️
implants/lib/eldritch/src/pivot/ncat_impl.rs	81.65% <66.66%> (+1.47%)	⬆️
... and 2 more

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[jabbate19]