feat: basic spot instance termination simulation

[purpleclay]

closes #18

[codecov]

Codecov Report

Merging #24 (e359677) into main (ac9808e) will increase coverage by 0.99%.
The diff coverage is 97.05%.

@@            Coverage Diff             @@
##             main      #24      +/-   ##
==========================================
+ Coverage   85.55%   86.54%   +0.99%     
==========================================
  Files          12       13       +1     
  Lines         360      394      +34     
==========================================
+ Hits          308      341      +33     
- Misses         47       48       +1     
  Partials        5        5              

Impacted Files	Coverage Δ
cmd/root.go	0.00% <0.00%> (ø)
pkg/imds/patch/func.go	100.00% <ø> (ø)
pkg/imds/patch/spot.go	100.00% <100.00%> (ø)
pkg/imds/server.go	88.03% <100.00%> (+0.53%)	⬆️

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more